diff --git a/qelectrotech.pro b/qelectrotech.pro
index fbe91915b..1142bcd25 100644
--- a/qelectrotech.pro
+++ b/qelectrotech.pro
@@ -59,6 +59,10 @@ DEFINES += QET_ALLOW_OVERRIDE_CTBTD_OPTION
 # Commenter la ligne ci-dessous pour desactiver l'option --config-dir
 DEFINES += QET_ALLOW_OVERRIDE_CD_OPTION
 
+# warn on *any* usage of deprecated APIs
+#DEFINES += QT_DEPRECATED_WARNINGS
+
+
 ######################################################################
 
 include(sources/PropertiesEditor/PropertiesEditor.pri)
diff --git a/sources/diagramcontext.cpp b/sources/diagramcontext.cpp
index cecf47e9e..57a6e3ccf 100644
--- a/sources/diagramcontext.cpp
+++ b/sources/diagramcontext.cpp
@@ -18,6 +18,7 @@
 #include "diagramcontext.h"
 #include <QRegExp>
 #include "qet.h"
+#include <algorithm>
 
 /**
 	@return a list containing all the keys in the context object.
@@ -30,7 +31,7 @@ QList<QString> DiagramContext::keys(DiagramContext::KeyOrder order) const {
 		if (order == Alphabetical) {
 			qSort(keys_list);
 		} else {
-			qSort(keys_list.begin(), keys_list.end(), DiagramContext::stringLongerThan);
+			std::sort(keys_list.begin(), keys_list.end(), DiagramContext::stringLongerThan);
 		}
 		return(keys_list);
 	}
diff --git a/sources/editor/elementscene.cpp b/sources/editor/elementscene.cpp
index 5c45afb68..495d07a42 100644
--- a/sources/editor/elementscene.cpp
+++ b/sources/editor/elementscene.cpp
@@ -32,6 +32,7 @@
 #include "nameslist.h"
 #include "ui/elementpropertieseditorwidget.h"
 #include "eseventinterface.h"
+#include <algorithm>
 
 #include <QKeyEvent>
 
@@ -749,7 +750,7 @@ QList<QGraphicsItem *> ElementScene::zItems(ItemOptions options) const {
 	
 	// ordonne les parties par leur zValue
 	if (options & SortByZValue) {
-		qSort(all_items_list.begin(), all_items_list.end(), ElementScene::zValueLessThan);
+		std::sort (all_items_list.begin(), all_items_list.end(), ElementScene::zValueLessThan);
 	}
 	
 	// rajoute eventuellement les bornes
diff --git a/sources/qetgraphicsitem/element.h b/sources/qetgraphicsitem/element.h
index 580ddfa02..501c77eca 100644
--- a/sources/qetgraphicsitem/element.h
+++ b/sources/qetgraphicsitem/element.h
@@ -22,6 +22,7 @@
 #include "qetgraphicsitem.h"
 #include "diagramcontext.h"
 #include "assignvariables.h"
+#include <algorithm>
 
 class ElementTextItem;
 class QETProject;
@@ -248,7 +249,7 @@ inline QUuid Element::uuid() const {
  * @return the list of linked elements, the list is sorted by position
  */
 inline QList <Element *> Element::linkedElements() {
-	 qSort(connected_elements.begin(), connected_elements.end(), comparPos);
+	 std::sort(connected_elements.begin(), connected_elements.end(), comparPos);
 	return connected_elements;
 }
 
diff --git a/sources/qetprintpreviewdialog.cpp b/sources/qetprintpreviewdialog.cpp
index 4c25e9767..f684a1724 100644
--- a/sources/qetprintpreviewdialog.cpp
+++ b/sources/qetprintpreviewdialog.cpp
@@ -23,6 +23,7 @@
 
 #include <QPrintPreviewWidget>
 #include <QPageSetupDialog>
+#include <algorithm>
 
 /**
 	Constructeur
@@ -400,7 +401,7 @@ void QETPrintPreviewDialog::updateZoomList() {
 	// ajout du zoom en cours
 	if (current_zoom_is_not_null && (!zooms_real.contains(current_zoom))) {
 		zooms_real << current_zoom;
-		qSort(zooms_real.begin(), zooms_real.end());
+		std::sort(zooms_real.begin(), zooms_real.end());
 	}
 	
 	// remplissage de la liste deroulante
diff --git a/sources/qtextorientationwidget.cpp b/sources/qtextorientationwidget.cpp
index 555004e91..a1243f6fe 100644
--- a/sources/qtextorientationwidget.cpp
+++ b/sources/qtextorientationwidget.cpp
@@ -16,6 +16,7 @@
 	along with QElectroTech.  If not, see <http://www.gnu.org/licenses/>.
 */
 #include "qtextorientationwidget.h"
+#include <algorithm>
 
 /**
 	Constructeur
@@ -283,7 +284,7 @@ QString QTextOrientationWidget::getMostUsableStringForRadius(const qreal &radius
 	// recupere les longueurs a disposition
 	QList<qreal> available_lengths = text_size_hash_.values();
 	// trie les longueurs par ordre croissant
-	qSort(available_lengths.begin(), available_lengths.end());
+	std::sort(available_lengths.begin(), available_lengths.end());
 	// recherche la position ou l'on insererait le rayon
 	QList<qreal>::const_iterator i = qUpperBound(available_lengths, radius);