diff --git a/src/calibre/gui2/cover_flow.py b/src/calibre/gui2/cover_flow.py
index e0893ae741..e091338693 100644
--- a/src/calibre/gui2/cover_flow.py
+++ b/src/calibre/gui2/cover_flow.py
@@ -73,6 +73,14 @@ if pictureflow is not None:
             self.setMinimumSize(QSize(int(2.35*0.67*height), (5/3.)*height+25))
             self.setFocusPolicy(Qt.WheelFocus)
             self.setSizePolicy(QSizePolicy(QSizePolicy.MinimumExpanding, QSizePolicy.Minimum))
+            
+        def wheelEvent(self, ev):
+            ev.accept()
+            if ev.delta() > 0:
+                self.showNext()
+            elif ev.delta() < 0:
+                self.showPrevious()
+            
         
 else:
     CoverFlow = None
diff --git a/src/calibre/gui2/pictureflow/pictureflow.cpp b/src/calibre/gui2/pictureflow/pictureflow.cpp
index a7e28f269d..9a7490d0d6 100644
--- a/src/calibre/gui2/pictureflow/pictureflow.cpp
+++ b/src/calibre/gui2/pictureflow/pictureflow.cpp
@@ -1347,7 +1347,6 @@ void PictureFlow::mouseReleaseEvent(QMouseEvent* event)
   emit inputReceived();
 }
 
-
 void PictureFlow::paintEvent(QPaintEvent* event)
 {
   Q_UNUSED(event);