diff --git a/labelme/app.py b/labelme/app.py
index 8ef10358a..207a769cf 100644
--- a/labelme/app.py
+++ b/labelme/app.py
@@ -1471,10 +1471,8 @@ def format_shape(s):
             return False
 
     def duplicateSelectedShape(self):
-        added_shapes = self.canvas.duplicateSelectedShapes()
-        for shape in added_shapes:
-            self.addLabel(shape)
-        self.setDirty()
+        self.copySelectedShape()
+        self.pasteSelectedShape()
 
     def pasteSelectedShape(self):
         self.loadShapes(self._copied_shapes, replace=False)
diff --git a/labelme/widgets/canvas.py b/labelme/widgets/canvas.py
index b243d107a..d71a6125b 100644
--- a/labelme/widgets/canvas.py
+++ b/labelme/widgets/canvas.py
@@ -666,12 +666,6 @@ def deleteShape(self, shape):
         self.storeShapes()
         self.update()
 
-    def duplicateSelectedShapes(self):
-        if self.selectedShapes:
-            self.selectedShapesCopy = [s.copy() for s in self.selectedShapes]
-            self.endMove(copy=True)
-        return self.selectedShapes
-
     def paintEvent(self, event):
         if not self.pixmap:
             return super(Canvas, self).paintEvent(event)