diff --git a/gui/graphFrame.py b/gui/graphFrame.py
index e0afd6151..b0de2d293 100644
--- a/gui/graphFrame.py
+++ b/gui/graphFrame.py
@@ -62,6 +62,7 @@ except ImportError as e:
     Patch = mpl = Canvas = Figure = None
     graphFrame_enabled = False
     mplImported = False
+    raise
 except Exception:
     # We can get exceptions deep within matplotlib. Catch those.  See GH #1046
     tb = traceback.format_exc()