diff --git a/qt-models/cleanertablemodel.cpp b/qt-models/cleanertablemodel.cpp
index 624ca4765..6a542ef27 100644
--- a/qt-models/cleanertablemodel.cpp
+++ b/qt-models/cleanertablemodel.cpp
@@ -6,9 +6,8 @@ CleanerTableModel::CleanerTableModel(QObject *parent) : QAbstractTableModel(pare
 {
 }
 
-int CleanerTableModel::columnCount(const QModelIndex &parent) const
+int CleanerTableModel::columnCount(const QModelIndex&) const
 {
-	Q_UNUSED(parent);
 	return headers.count();
 }
 
diff --git a/qt-models/cylindermodel.cpp b/qt-models/cylindermodel.cpp
index 3a7fb62e3..0892d58eb 100644
--- a/qt-models/cylindermodel.cpp
+++ b/qt-models/cylindermodel.cpp
@@ -427,9 +427,8 @@ bool CylindersModel::setData(const QModelIndex &index, const QVariant &value, in
 	return true;
 }
 
-int CylindersModel::rowCount(const QModelIndex &parent) const
+int CylindersModel::rowCount(const QModelIndex&) const
 {
-	Q_UNUSED(parent);
 	return rows;
 }
 
diff --git a/qt-models/divecomputerextradatamodel.cpp b/qt-models/divecomputerextradatamodel.cpp
index d2d43ce2e..815c6cd81 100644
--- a/qt-models/divecomputerextradatamodel.cpp
+++ b/qt-models/divecomputerextradatamodel.cpp
@@ -50,9 +50,8 @@ QVariant ExtraDataModel::data(const QModelIndex &index, int role) const
 	return ret;
 }
 
-int ExtraDataModel::rowCount(const QModelIndex &parent) const
+int ExtraDataModel::rowCount(const QModelIndex&) const
 {
-	Q_UNUSED(parent);
 	return rows;
 }
 
diff --git a/qt-models/divecomputermodel.cpp b/qt-models/divecomputermodel.cpp
index 51766bb0e..8488b5666 100644
--- a/qt-models/divecomputermodel.cpp
+++ b/qt-models/divecomputermodel.cpp
@@ -46,9 +46,8 @@ QVariant DiveComputerModel::data(const QModelIndex &index, int role) const
 	return ret;
 }
 
-int DiveComputerModel::rowCount(const QModelIndex &parent) const
+int DiveComputerModel::rowCount(const QModelIndex&) const
 {
-	Q_UNUSED(parent);
 	return numRows;
 }
 
@@ -78,10 +77,9 @@ Qt::ItemFlags DiveComputerModel::flags(const QModelIndex &index) const
 	return flags;
 }
 
-bool DiveComputerModel::setData(const QModelIndex &index, const QVariant &value, int role)
+bool DiveComputerModel::setData(const QModelIndex &index, const QVariant &value, int)
 {
 	// We should test if the role == Qt::EditRole
-	Q_UNUSED(role);
 
 	// WARN: This seems wrong - The values don't are ordered - we need a map from the Key to Index, or something.
 	QList<DiveComputerNode> values = dcWorkingMap.values();
diff --git a/qt-models/diveimportedmodel.cpp b/qt-models/diveimportedmodel.cpp
index ea70ece39..8a0f4f7c7 100644
--- a/qt-models/diveimportedmodel.cpp
+++ b/qt-models/diveimportedmodel.cpp
@@ -11,15 +11,13 @@ DiveImportedModel::DiveImportedModel(QObject *o) : QAbstractTableModel(o),
 	diveTable = &downloadTable;
 }
 
-int DiveImportedModel::columnCount(const QModelIndex &model) const
+int DiveImportedModel::columnCount(const QModelIndex&) const
 {
-	Q_UNUSED(model)
 	return 3;
 }
 
-int DiveImportedModel::rowCount(const QModelIndex &model) const
+int DiveImportedModel::rowCount(const QModelIndex&) const
 {
-	Q_UNUSED(model)
 	return lastIndex - firstIndex + 1;
 }
 
diff --git a/qt-models/divelocationmodel.cpp b/qt-models/divelocationmodel.cpp
index 3de2c1159..c706744a3 100644
--- a/qt-models/divelocationmodel.cpp
+++ b/qt-models/divelocationmodel.cpp
@@ -24,15 +24,13 @@ LocationInformationModel::LocationInformationModel(QObject *obj) : QAbstractTabl
 {
 }
 
-int LocationInformationModel::columnCount(const QModelIndex &parent) const
+int LocationInformationModel::columnCount(const QModelIndex&) const
 {
-	Q_UNUSED(parent);
 	return COLUMNS;
 }
 
-int LocationInformationModel::rowCount(const QModelIndex &parent) const
+int LocationInformationModel::rowCount(const QModelIndex&) const
 {
-	Q_UNUSED(parent);
 	return internalRowCount + 2;
 }
 
@@ -154,10 +152,8 @@ bool LocationInformationModel::setData(const QModelIndex &index, const QVariant
 	return true;
 }
 
-bool LocationInformationModel::removeRows(int row, int count, const QModelIndex & parent)
+bool LocationInformationModel::removeRows(int row, int, const QModelIndex&)
 {
-	Q_UNUSED(count);
-	Q_UNUSED(parent);
 	if(row >= rowCount())
 		return false;
 
diff --git a/qt-models/divepicturemodel.cpp b/qt-models/divepicturemodel.cpp
index 48fa652c9..8c66f5974 100644
--- a/qt-models/divepicturemodel.cpp
+++ b/qt-models/divepicturemodel.cpp
@@ -85,9 +85,8 @@ void DivePictureModel::updateDivePictures()
 	endResetModel();
 }
 
-int DivePictureModel::columnCount(const QModelIndex &parent) const
+int DivePictureModel::columnCount(const QModelIndex&) const
 {
-	Q_UNUSED(parent);
 	return 2;
 }
 
@@ -167,9 +166,8 @@ void DivePictureModel::removePictures(const QVector<QString> &fileUrls)
 	}
 }
 
-int DivePictureModel::rowCount(const QModelIndex &parent) const
+int DivePictureModel::rowCount(const QModelIndex&) const
 {
-	Q_UNUSED(parent);
 	return pictures.count();
 }
 
diff --git a/qt-models/diveplannermodel.cpp b/qt-models/diveplannermodel.cpp
index 7a21ef6ce..26a9ff175 100644
--- a/qt-models/diveplannermodel.cpp
+++ b/qt-models/diveplannermodel.cpp
@@ -231,9 +231,8 @@ bool DivePlannerPointsModel::recalcQ()
 	return recalc;
 }
 
-int DivePlannerPointsModel::columnCount(const QModelIndex &parent) const
+int DivePlannerPointsModel::columnCount(const QModelIndex&) const
 {
-	Q_UNUSED(parent);
 	return COLUMNS; // to disable CCSETPOINT subtract one
 }
 
@@ -393,9 +392,8 @@ Qt::ItemFlags DivePlannerPointsModel::flags(const QModelIndex &index) const
 		return QAbstractItemModel::flags(index);
 }
 
-int DivePlannerPointsModel::rowCount(const QModelIndex &parent) const
+int DivePlannerPointsModel::rowCount(const QModelIndex&) const
 {
-	Q_UNUSED(parent);
 	return divepoints.count();
 }
 
diff --git a/qt-models/diveplotdatamodel.cpp b/qt-models/diveplotdatamodel.cpp
index 203ac3bd2..35490a0a3 100644
--- a/qt-models/diveplotdatamodel.cpp
+++ b/qt-models/diveplotdatamodel.cpp
@@ -14,9 +14,8 @@ DivePlotDataModel::DivePlotDataModel(QObject *parent) :
 	memset(&plot_deco_state, 0, sizeof(struct deco_state));
 }
 
-int DivePlotDataModel::columnCount(const QModelIndex &parent) const
+int DivePlotDataModel::columnCount(const QModelIndex&) const
 {
-	Q_UNUSED(parent);
 	return COLUMNS;
 }
 
@@ -97,9 +96,8 @@ const plot_info &DivePlotDataModel::data() const
 	return pInfo;
 }
 
-int DivePlotDataModel::rowCount(const QModelIndex &parent) const
+int DivePlotDataModel::rowCount(const QModelIndex&) const
 {
-	Q_UNUSED(parent);
 	return pInfo.nr;
 }
 
diff --git a/qt-models/filtermodels.cpp b/qt-models/filtermodels.cpp
index ad6ce783d..34345f381 100644
--- a/qt-models/filtermodels.cpp
+++ b/qt-models/filtermodels.cpp
@@ -132,11 +132,8 @@ int SuitsFilterModel::countDives(const char *s) const
 	return count_dives_with_suit(s);
 }
 
-bool SuitsFilterModel::doFilter(dive *d, QModelIndex &index0, QAbstractItemModel *sourceModel) const
+bool SuitsFilterModel::doFilter(dive *d, QModelIndex&, QAbstractItemModel*) const
 {
-	Q_UNUSED(index0);
-	Q_UNUSED(sourceModel);
-
 	// rowCount() == 0 should never happen, because we have the "no suits" row
 	// let's handle it gracefully anyway.
 	if (!anyChecked || rowCount() == 0)
@@ -199,11 +196,8 @@ void TagFilterModel::repopulate()
 	updateList(list);
 }
 
-bool TagFilterModel::doFilter(dive *d, QModelIndex &index0, QAbstractItemModel *sourceModel) const
+bool TagFilterModel::doFilter(dive *d, QModelIndex&, QAbstractItemModel*) const
 {
-	Q_UNUSED(index0);
-	Q_UNUSED(sourceModel);
-
 	// If there's nothing checked, this should show everything
 	// rowCount() == 0 should never happen, because we have the "no tags" row
 	// let's handle it gracefully anyway.
@@ -240,11 +234,8 @@ int BuddyFilterModel::countDives(const char *s) const
 	return count_dives_with_person(s);
 }
 
-bool BuddyFilterModel::doFilter(dive *d, QModelIndex &index0, QAbstractItemModel *sourceModel) const
+bool BuddyFilterModel::doFilter(dive *d, QModelIndex&, QAbstractItemModel*) const
 {
-	Q_UNUSED(index0);
-	Q_UNUSED(sourceModel);
-
 	// If there's nothing checked, this should show everything
 	// rowCount() == 0 should never happen, because we have the "no tags" row
 	// let's handle it gracefully anyway.
@@ -298,11 +289,8 @@ int LocationFilterModel::countDives(const char *s) const
 	return count_dives_with_location(s);
 }
 
-bool LocationFilterModel::doFilter(struct dive *d, QModelIndex &index0, QAbstractItemModel *sourceModel) const
+bool LocationFilterModel::doFilter(struct dive *d, QModelIndex&, QAbstractItemModel*) const
 {
-	Q_UNUSED(index0);
-	Q_UNUSED(sourceModel);
-
 	// rowCount() == 0 should never happen, because we have the "no location" row
 	// let's handle it gracefully anyway.
 	if (!anyChecked || rowCount() == 0)
diff --git a/qt-models/gpslistmodel.cpp b/qt-models/gpslistmodel.cpp
index ee7867314..231ec04f7 100644
--- a/qt-models/gpslistmodel.cpp
+++ b/qt-models/gpslistmodel.cpp
@@ -27,9 +27,8 @@ void GpsListModel::clear()
 	}
 }
 
-int GpsListModel::rowCount(const QModelIndex &parent) const
+int GpsListModel::rowCount(const QModelIndex&) const
 {
-	Q_UNUSED(parent);
 	return m_gpsFixes.count();
 }
 
diff --git a/qt-models/maplocationmodel.cpp b/qt-models/maplocationmodel.cpp
index a4afe76e2..45759a57f 100644
--- a/qt-models/maplocationmodel.cpp
+++ b/qt-models/maplocationmodel.cpp
@@ -77,9 +77,8 @@ QHash<int, QByteArray> MapLocationModel::roleNames() const
 	return m_roles;
 }
 
-int MapLocationModel::rowCount(const QModelIndex &parent) const
+int MapLocationModel::rowCount(const QModelIndex&) const
 {
-	Q_UNUSED(parent);
 	return m_mapLocations.size();
 }
 
diff --git a/qt-models/messagehandlermodel.cpp b/qt-models/messagehandlermodel.cpp
index 78497f5bc..c2ba80d37 100644
--- a/qt-models/messagehandlermodel.cpp
+++ b/qt-models/messagehandlermodel.cpp
@@ -13,9 +13,8 @@
 extern void writeToAppLogFile(QString logText);
 #endif
 
-void logMessageHandler(QtMsgType type, const QMessageLogContext &context, const QString &msg)
+void logMessageHandler(QtMsgType type, const QMessageLogContext&, const QString &msg)
 {
-	Q_UNUSED(context)
 	MessageHandlerModel::self()->addLog(type, msg);
 }
 
@@ -25,16 +24,14 @@ MessageHandlerModel * MessageHandlerModel::self()
 	return self;
 }
 
-MessageHandlerModel::MessageHandlerModel(QObject *parent)
+MessageHandlerModel::MessageHandlerModel(QObject*)
 {
-	Q_UNUSED(parent)
 	// no more than one message handler.
 	qInstallMessageHandler(logMessageHandler);
 }
 
-int MessageHandlerModel::rowCount(const QModelIndex& parent) const
+int MessageHandlerModel::rowCount(const QModelIndex&) const
 {
-	Q_UNUSED(parent)
 	return m_data.size();
 }
 
diff --git a/qt-models/models.cpp b/qt-models/models.cpp
index f15073111..a0f059165 100644
--- a/qt-models/models.cpp
+++ b/qt-models/models.cpp
@@ -24,9 +24,8 @@ const QPixmap &trashForbiddenIcon()
 	return trash;
 }
 
-Qt::ItemFlags GasSelectionModel::flags(const QModelIndex &index) const
+Qt::ItemFlags GasSelectionModel::flags(const QModelIndex&) const
 {
-	Q_UNUSED(index);
 	return Qt::ItemIsEnabled | Qt::ItemIsSelectable;
 }
 
@@ -69,9 +68,8 @@ QVariant GasSelectionModel::data(const QModelIndex &index, int role) const
 }
 // Dive Type Model for the divetype combo box
 
-Qt::ItemFlags DiveTypeSelectionModel::flags(const QModelIndex &index) const
+Qt::ItemFlags DiveTypeSelectionModel::flags(const QModelIndex&) const
 {
-	Q_UNUSED(index);
 	return Qt::ItemIsEnabled | Qt::ItemIsSelectable;
 }
 
@@ -134,8 +132,7 @@ QVariant LanguageModel::data(const QModelIndex &index, int role) const
 	return QVariant();
 }
 
-int LanguageModel::rowCount(const QModelIndex &parent) const
+int LanguageModel::rowCount(const QModelIndex&) const
 {
-	Q_UNUSED(parent);
 	return languages.count();
 }
diff --git a/qt-models/tankinfomodel.cpp b/qt-models/tankinfomodel.cpp
index d2644a16b..ee970e638 100644
--- a/qt-models/tankinfomodel.cpp
+++ b/qt-models/tankinfomodel.cpp
@@ -15,19 +15,17 @@ const QString &TankInfoModel::biggerString() const
 	return biggerEntry;
 }
 
-bool TankInfoModel::insertRows(int row, int count, const QModelIndex &parent)
+bool TankInfoModel::insertRows(int, int count, const QModelIndex &parent)
 {
-	Q_UNUSED(row);
 	beginInsertRows(parent, rowCount(), rowCount());
 	rows += count;
 	endInsertRows();
 	return true;
 }
 
-bool TankInfoModel::setData(const QModelIndex &index, const QVariant &value, int role)
+bool TankInfoModel::setData(const QModelIndex &index, const QVariant &value, int)
 {
 	//WARN Seems wrong, we need to check for role == Qt::EditRole
-	Q_UNUSED(role);
 
 	if (index.row() < 0 || index.row() > MAX_TANK_INFO - 1)
 		return false;
@@ -84,9 +82,8 @@ QVariant TankInfoModel::data(const QModelIndex &index, int role) const
 	return ret;
 }
 
-int TankInfoModel::rowCount(const QModelIndex &parent) const
+int TankInfoModel::rowCount(const QModelIndex&) const
 {
-	Q_UNUSED(parent);
 	return rows + 1;
 }
 
diff --git a/qt-models/treemodel.cpp b/qt-models/treemodel.cpp
index 4439ec54f..5ddd2d3a2 100644
--- a/qt-models/treemodel.cpp
+++ b/qt-models/treemodel.cpp
@@ -12,9 +12,8 @@ TreeItem::~TreeItem()
 	qDeleteAll(children);
 }
 
-Qt::ItemFlags TreeItem::flags(const QModelIndex &index) const
+Qt::ItemFlags TreeItem::flags(const QModelIndex&) const
 {
-	Q_UNUSED(index);
 	return Qt::ItemIsEnabled | Qt::ItemIsSelectable;
 }
 
@@ -25,10 +24,8 @@ int TreeItem::row() const
 	return 0;
 }
 
-QVariant TreeItem::data(int column, int role) const
+QVariant TreeItem::data(int, int) const
 {
-	Q_UNUSED(column);
-	Q_UNUSED(role);
 	return QVariant();
 }
 
@@ -57,11 +54,8 @@ QVariant TreeModel::data(const QModelIndex &index, int role) const
 		return val;
 }
 
-bool TreeItem::setData(const QModelIndex &index, const QVariant &value, int role)
+bool TreeItem::setData(const QModelIndex&, const QVariant&, int)
 {
-	Q_UNUSED(index);
-	Q_UNUSED(value);
-	Q_UNUSED(role);
 	return false;
 }
 
@@ -104,8 +98,7 @@ int TreeModel::rowCount(const QModelIndex &parent) const
 	return amount;
 }
 
-int TreeModel::columnCount(const QModelIndex &parent) const
+int TreeModel::columnCount(const QModelIndex&) const
 {
-	Q_UNUSED(parent);
 	return columns;
 }
diff --git a/qt-models/weightmodel.cpp b/qt-models/weightmodel.cpp
index 20eb644f3..7a2f721dd 100644
--- a/qt-models/weightmodel.cpp
+++ b/qt-models/weightmodel.cpp
@@ -142,9 +142,8 @@ Qt::ItemFlags WeightModel::flags(const QModelIndex &index) const
 	return QAbstractItemModel::flags(index) | Qt::ItemIsEditable;
 }
 
-int WeightModel::rowCount(const QModelIndex &parent) const
+int WeightModel::rowCount(const QModelIndex&) const
 {
-	Q_UNUSED(parent);
 	return rows;
 }
 
diff --git a/qt-models/weightsysteminfomodel.cpp b/qt-models/weightsysteminfomodel.cpp
index 08fecec5d..14d268bcb 100644
--- a/qt-models/weightsysteminfomodel.cpp
+++ b/qt-models/weightsysteminfomodel.cpp
@@ -10,19 +10,17 @@ WSInfoModel *WSInfoModel::instance()
 	return &self;
 }
 
-bool WSInfoModel::insertRows(int row, int count, const QModelIndex &parent)
+bool WSInfoModel::insertRows(int, int count, const QModelIndex &parent)
 {
-	Q_UNUSED(row);
 	beginInsertRows(parent, rowCount(), rowCount());
 	rows += count;
 	endInsertRows();
 	return true;
 }
 
-bool WSInfoModel::setData(const QModelIndex &index, const QVariant &value, int role)
+bool WSInfoModel::setData(const QModelIndex &index, const QVariant &value, int)
 {
 	//WARN: check for Qt::EditRole
-	Q_UNUSED(role);
 	struct ws_info_t *info = &ws_info[index.row()];
 	switch (index.column()) {
 	case DESCRIPTION:
@@ -68,9 +66,8 @@ QVariant WSInfoModel::data(const QModelIndex &index, int role) const
 	return ret;
 }
 
-int WSInfoModel::rowCount(const QModelIndex &parent) const
+int WSInfoModel::rowCount(const QModelIndex&) const
 {
-	Q_UNUSED(parent);
 	return rows + 1;
 }