diff --git a/dive.c b/dive.c
index 4bf5f2742..030dfa410 100644
--- a/dive.c
+++ b/dive.c
@@ -195,7 +195,16 @@ struct dive *alloc_dive(void)
 	return dive;
 }
 
-void copy_samples(struct dive* s, struct dive* d)
+void copy_cylinders(struct dive *s, struct dive *d)
+{
+	int i;
+	if (!s || !d)
+		return;
+	for (i = 0; i < MAX_CYLINDERS; i++)
+		d->cylinder[i] = s->cylinder[i];
+}
+
+void copy_samples(struct dive *s, struct dive *d)
 {
 	/* instead of carefully copying them one by one and calling add_sample
 	 * over and over again, let's just copy the whole blob */
diff --git a/dive.h b/dive.h
index 151ba524a..e199f7878 100644
--- a/dive.h
+++ b/dive.h
@@ -653,6 +653,7 @@ extern unsigned int dc_airtemp(struct divecomputer *dc);
 extern struct dive *merge_dives(struct dive *a, struct dive *b, int offset, bool prefer_downloaded);
 extern struct dive *try_to_merge(struct dive *a, struct dive *b, bool prefer_downloaded);
 extern void renumber_dives(int nr);
+extern void copy_cylinders(struct dive *s, struct dive *d);
 extern void copy_samples(struct dive *s, struct dive *d);
 
 extern void add_gas_switch_event(struct dive *dive, struct divecomputer *dc, int time, int idx);
diff --git a/qt-ui/diveplanner.cpp b/qt-ui/diveplanner.cpp
index 169158987..39db8f431 100644
--- a/qt-ui/diveplanner.cpp
+++ b/qt-ui/diveplanner.cpp
@@ -437,6 +437,7 @@ void DivePlannerPointsModel::loadFromDive(dive* d)
 	}
 
 	Q_FOREACH(const sample &s, backupSamples){
+		// we need to use the correct gas
 		plannerModel->addStop(s.depth.mm, s.time.seconds, tr("Air"), 0);
 	}
 }
@@ -1190,8 +1191,10 @@ void DivePlannerPointsModel::createTemporaryPlan()
 	tempDive = NULL;
 	const char *errorString = NULL;
 	plan(&diveplan, &cache, &tempDive, isPlanner(), &errorString);
-	if (mode == ADD)
+	if (mode == ADD) {
 		copy_samples(tempDive, current_dive);
+		copy_cylinders(tempDive, current_dive);
+	}
 #if DEBUG_PLAN
 	dump_plan(&diveplan);
 #endif