diff --git a/lib/matplotlib/colorbar.py b/lib/matplotlib/colorbar.py
index b8da91c05109..e7b81e433a66 100644
--- a/lib/matplotlib/colorbar.py
+++ b/lib/matplotlib/colorbar.py
@@ -260,10 +260,8 @@ def __call__(self, ax, renderer):
         offset = extendlen[0] / len
         # we need to reset the aspect ratio of the axes to account
         # of the extends...
-        if hasattr(ax, '_colorbar_info'):
-            aspect = ax._colorbar_info['aspect']
-        else:
-            aspect = False
+        aspect = self._cbar.ax.get_box_aspect()
+        ax._colorbar_info['aspect'] = aspect
         # now shrink and/or offset to take into account the
         # extend tri/rectangles.
         if self._cbar.orientation == 'vertical':