diff --git a/sources/diagramview.cpp b/sources/diagramview.cpp
index 42889f8f1..ddedc3fe5 100644
--- a/sources/diagramview.cpp
+++ b/sources/diagramview.cpp
@@ -606,10 +606,10 @@ switch(e -> key())
 		case Qt::Key_End:
 			current_project->changeLastTab();
 			return;
-		case Qt::Key_Minus:
+        case Qt::Key_ZoomOut:
 			zoom(0.85);
 			return;
-		case Qt::Key_Plus:
+        case Qt::Key_ZoomIn:
 			zoom(1.15);
 			return;
 		case Qt::Key_Up: