diff --git a/sugar/graphics/timeline.py b/sugar/graphics/timeline.py
index d8342fca..77d24287 100644
--- a/sugar/graphics/timeline.py
+++ b/sugar/graphics/timeline.py
@@ -31,7 +31,7 @@ class TimelineObserver:
 		try:
 			method = getattr(self._observer, 'do_' + tag)
 			method(current_frame, n_frames)
-		except:
+		except AttributeError:
 			pass
 
 class Timeline: