diff --git a/IPython/core/formatters.py b/IPython/core/formatters.py
index f2fa9bb..4146656 100644
--- a/IPython/core/formatters.py
+++ b/IPython/core/formatters.py
@@ -76,7 +76,7 @@ def _valid_formatter(f):
         # anything that works with zero args should be okay
         try:
             inspect.getcallargs(f)
-        except TypeError:
+        except Exception:
             return False
         else:
             return True