diff --git a/profile-widget/profilewidget2.cpp b/profile-widget/profilewidget2.cpp
index 05a1fcff1..ae215e67a 100644
--- a/profile-widget/profilewidget2.cpp
+++ b/profile-widget/profilewidget2.cpp
@@ -735,7 +735,7 @@ void ProfileWidget2::plotDive(const struct dive *d, bool force, bool doClearPict
 		ocpo2GasItem->setVisible(false);
 	}
 #endif
-	tankItem->setData(dataModel, &plotInfo, &displayed_dive);
+	tankItem->setData(&plotInfo, &displayed_dive);
 
 	dataModel->emitDataChanged();
 	// The event items are a bit special since we don't know how many events are going to
diff --git a/profile-widget/tankitem.cpp b/profile-widget/tankitem.cpp
index adf9ba99c..5469ffc0d 100644
--- a/profile-widget/tankitem.cpp
+++ b/profile-widget/tankitem.cpp
@@ -1,6 +1,5 @@
 // SPDX-License-Identifier: GPL-2.0
 #include "profile-widget/tankitem.h"
-#include "qt-models/diveplotdatamodel.h"
 #include "profile-widget/divetextitem.h"
 #include "core/event.h"
 #include "core/profile.h"
@@ -33,7 +32,7 @@ TankItem::TankItem(QObject *parent) :
 	hAxis = nullptr;
 }
 
-void TankItem::setData(DivePlotDataModel *model, struct plot_info *plotInfo, struct dive *d)
+void TankItem::setData(struct plot_info *plotInfo, struct dive *d)
 {
 	// If there is nothing to plot, quit early.
 	if (plotInfo->nr <= 0) {
@@ -45,10 +44,7 @@ void TankItem::setData(DivePlotDataModel *model, struct plot_info *plotInfo, str
 	struct plot_data *last_entry = &plotInfo->entry[plotInfo->nr - 1];
 	plotEndTime = last_entry->sec;
 
-	// Stay informed of changes to the tanks.
-	connect(model, SIGNAL(dataChanged(QModelIndex, QModelIndex)), this, SLOT(modelDataChanged(QModelIndex, QModelIndex)), Qt::UniqueConnection);
-
-	modelDataChanged();
+	replot();
 }
 
 void TankItem::createBar(int startTime, int stopTime, struct gasmix gas)
@@ -79,7 +75,7 @@ void TankItem::createBar(int startTime, int stopTime, struct gasmix gas)
 	label->setZValue(101);
 }
 
-void TankItem::modelDataChanged(const QModelIndex&, const QModelIndex&)
+void TankItem::replot()
 {
 	// We don't have enougth data to calculate things, quit.
 	if (plotEndTime < 0)
@@ -115,6 +111,6 @@ void TankItem::modelDataChanged(const QModelIndex&, const QModelIndex&)
 void TankItem::setHorizontalAxis(DiveCartesianAxis *horizontal)
 {
 	hAxis = horizontal;
-	connect(hAxis, SIGNAL(sizeChanged()), this, SLOT(modelDataChanged()));
-	modelDataChanged();
+	connect(hAxis, SIGNAL(sizeChanged()), this, SLOT(replot()));
+	replot();
 }
diff --git a/profile-widget/tankitem.h b/profile-widget/tankitem.h
index 73994444b..b89b6b0ff 100644
--- a/profile-widget/tankitem.h
+++ b/profile-widget/tankitem.h
@@ -3,7 +3,6 @@
 #define TANKITEM_H
 
 #include <QGraphicsItem>
-#include <QModelIndex>
 #include <QBrush>
 #include "profile-widget/divelineitem.h"
 #include "profile-widget/divecartesianaxis.h"
@@ -16,12 +15,10 @@ class TankItem : public QObject, public QGraphicsRectItem
 public:
 	explicit TankItem(QObject *parent = 0);
 	void setHorizontalAxis(DiveCartesianAxis *horizontal);
-	void setData(DivePlotDataModel *model, struct plot_info *plotInfo, struct dive *d);
-
-signals:
+	void setData(struct plot_info *plotInfo, struct dive *d);
 
 public slots:
-	void modelDataChanged(const QModelIndex &topLeft = QModelIndex(), const QModelIndex &bottomRight = QModelIndex());
+	void replot();
 
 private:
 	void createBar(int startTime, int stopTime, struct gasmix gas);