diff --git a/src/calibre/gui2/image_popup.py b/src/calibre/gui2/image_popup.py
index bca1782fe3..b4a84486b0 100644
--- a/src/calibre/gui2/image_popup.py
+++ b/src/calibre/gui2/image_popup.py
@@ -105,6 +105,8 @@ class ScrollArea(QScrollArea):
                 self.zoom_requested.emit(self.current_wheel_angle_delta < 0)
                 self.current_wheel_angle_delta = 0
             ev.accept()
+        else:
+            super().wheelEvent(ev)
 
 
 class ImageView(QDialog):