diff --git a/src/Gui/GestureNavigationStyle.cpp b/src/Gui/GestureNavigationStyle.cpp
index 58ba083877..98a1e3e2a7 100644
--- a/src/Gui/GestureNavigationStyle.cpp
+++ b/src/Gui/GestureNavigationStyle.cpp
@@ -319,12 +319,12 @@ public:
                 break;
                 case SoKeyboardEvent::PAGE_UP:
                     if(!press){
-                        ns.doZoom(ns.viewer->getSoRenderManager()->getCamera(), true, posn);
+                        ns.doZoom(ns.viewer->getSoRenderManager()->getCamera(), ns.getDelta(), posn);
                     }
                 break;
                 case SoKeyboardEvent::PAGE_DOWN:
                     if(!press){
-                        ns.doZoom(ns.viewer->getSoRenderManager()->getCamera(), false, posn);
+                        ns.doZoom(ns.viewer->getSoRenderManager()->getCamera(), -ns.getDelta(), posn);
                     }
                 break;
                 default:
diff --git a/src/Gui/MayaGestureNavigationStyle.cpp b/src/Gui/MayaGestureNavigationStyle.cpp
index 2be4f54707..d177759c4e 100644
--- a/src/Gui/MayaGestureNavigationStyle.cpp
+++ b/src/Gui/MayaGestureNavigationStyle.cpp
@@ -345,13 +345,13 @@ SbBool MayaGestureNavigationStyle::processSoEvent(const SoEvent * const ev)
                 break;
             case SoKeyboardEvent::PAGE_UP:
                 if(press){
-                    doZoom(viewer->getSoRenderManager()->getCamera(), true, posn);
+                    doZoom(viewer->getSoRenderManager()->getCamera(), getDelta(), posn);
                 }
                 processed = true;
                 break;
             case SoKeyboardEvent::PAGE_DOWN:
                 if(press){
-                    doZoom(viewer->getSoRenderManager()->getCamera(), false, posn);
+                    doZoom(viewer->getSoRenderManager()->getCamera(), -getDelta(), posn);
                 }
                 processed = true;
                 break;
diff --git a/src/Gui/NavigationStyle.cpp b/src/Gui/NavigationStyle.cpp
index c98d268b29..4b6c842500 100644
--- a/src/Gui/NavigationStyle.cpp
+++ b/src/Gui/NavigationStyle.cpp
@@ -771,36 +771,17 @@ void NavigationStyle::zoomOut()
     zoom(viewer->getSoRenderManager()->getCamera(), this->zoomStep);
 }
 
-void NavigationStyle::doZoom(SoCamera* camera, SbBool forward, const SbVec2f& pos)
+/*!
+ * Returns the steps if the mouse wheel is rotated
+ */
+int NavigationStyle::getDelta() const
 {
-//    SbBool zoomAtCur = this->zoomAtCursor;
-//    if (zoomAtCur) {
-//        const SbViewportRegion & vp = viewer->getSoRenderManager()->getViewportRegion();
-//        float ratio = vp.getViewportAspectRatio();
-//        SbViewVolume vv = camera->getViewVolume(vp.getViewportAspectRatio());
-//        SbPlane panplane = vv.getPlane(camera->focalDistance.getValue());
-//        panCamera(viewer->getSoRenderManager()->getCamera(), ratio, panplane, SbVec2f(0.5,0.5), pos);
-//    }
-
-    float value = this->zoomStep;
-    if (!forward)
-        value = -value;
-    if (this->invertZoom)
-        value = -value;
-    doZoom(camera, value, pos);
-
-//    if (zoomAtCur) {
-//        const SbViewportRegion & vp = viewer->getSoRenderManager()->getViewportRegion();
-//        float ratio = vp.getViewportAspectRatio();
-//        SbViewVolume vv = camera->getViewVolume(vp.getViewportAspectRatio());
-//        SbPlane panplane = vv.getPlane(camera->focalDistance.getValue());
-//        panCamera(viewer->getSoRenderManager()->getCamera(), ratio, panplane, pos, SbVec2f(0.5,0.5));
-//    }
+    return 120;
 }
 
-void NavigationStyle::doZoom_wheel(SoCamera* camera, int wheeldelta, const SbVec2f& pos)
+void NavigationStyle::doZoom(SoCamera* camera, int wheeldelta, const SbVec2f& pos)
 {
-    float value =this->zoomStep * wheeldelta / float(120.0);
+    float value = this->zoomStep * wheeldelta / float(getDelta());
     if (this->invertZoom)
         value = -value;
     doZoom(camera, value, pos);
@@ -1483,7 +1464,7 @@ SbBool NavigationStyle::processSoEvent(const SoEvent * const ev)
 
     //handle mouse wheel zoom
     if(ev->isOfType(SoMouseWheelEvent::getClassTypeId())){
-        doZoom_wheel(
+        doZoom(
             viewer->getSoRenderManager()->getCamera(),
             static_cast<const SoMouseWheelEvent*>(ev)->getDelta(),
             posn
diff --git a/src/Gui/NavigationStyle.h b/src/Gui/NavigationStyle.h
index e542ce762a..732ac7ecb9 100644
--- a/src/Gui/NavigationStyle.h
+++ b/src/Gui/NavigationStyle.h
@@ -188,10 +188,10 @@ protected:
                    const SbVec2f & current);
     void pan(SoCamera* camera);
     void panToCenter(const SbPlane & pplane, const SbVec2f & currpos);
+    int getDelta() const;
     void zoom(SoCamera * camera, float diffvalue);
     void zoomByCursor(const SbVec2f & thispos, const SbVec2f & prevpos);
-    void doZoom(SoCamera * camera, SbBool forward, const SbVec2f& pos);
-    void doZoom_wheel(SoCamera * camera, int wheeldelta, const SbVec2f& pos);
+    void doZoom(SoCamera * camera, int wheeldelta, const SbVec2f& pos);
     void doZoom(SoCamera * camera, float logzoomfactor, const SbVec2f& pos);
     void doRotate(SoCamera * camera, float angle, const SbVec2f& pos);
     void spin(const SbVec2f & pointerpos);
diff --git a/src/Gui/TouchpadNavigationStyle.cpp b/src/Gui/TouchpadNavigationStyle.cpp
index d9f2802098..944c7bc25e 100644
--- a/src/Gui/TouchpadNavigationStyle.cpp
+++ b/src/Gui/TouchpadNavigationStyle.cpp
@@ -157,11 +157,11 @@ SbBool TouchpadNavigationStyle::processSoEvent(const SoEvent * const ev)
                 this->setViewing(true);
             break;
         case SoKeyboardEvent::PAGE_UP:
-            doZoom(viewer->getSoRenderManager()->getCamera(), true, posn);
+            doZoom(viewer->getSoRenderManager()->getCamera(), getDelta(), posn);
             processed = true;
             break;
         case SoKeyboardEvent::PAGE_DOWN:
-            doZoom(viewer->getSoRenderManager()->getCamera(), false, posn);
+            doZoom(viewer->getSoRenderManager()->getCamera(), -getDelta(), posn);
             processed = true;
             break;
         default: