diff --git a/src/View/Network/GraphWidget.py b/src/View/Network/GraphWidget.py
index 6f91e293..4157bb63 100644
--- a/src/View/Network/GraphWidget.py
+++ b/src/View/Network/GraphWidget.py
@@ -901,7 +901,7 @@ class GraphWidget(QGraphicsView):
         painter.drawRect(sceneRect)
 
     def wheelEvent(self, event):
-        self.scaleView(math.pow(2.0, -event.angleDelta().y() / 240.0))
+        self.scaleView(math.pow(2.0, event.angleDelta().y() / 240.0))
 
     def scaleView(self, scaleFactor):
         factor = self.transform().scale(
diff --git a/src/View/Scenarios/GraphWidget.py b/src/View/Scenarios/GraphWidget.py
index 7405bef0..65a1ced4 100644
--- a/src/View/Scenarios/GraphWidget.py
+++ b/src/View/Scenarios/GraphWidget.py
@@ -312,7 +312,7 @@ class GraphWidget(QGraphicsView):
         painter.drawRect(sceneRect)
 
     def wheelEvent(self, event):
-        self.scaleView(math.pow(2.0, -event.angleDelta().y() / 240.0))
+        self.scaleView(math.pow(2.0, event.angleDelta().y() / 240.0))
 
     def keyPressEvent(self, event):
         key = event.key()