diff --git a/IPython/core/oinspect.py b/IPython/core/oinspect.py
index 24cc03bf94d..124410c8cc8 100644
--- a/IPython/core/oinspect.py
+++ b/IPython/core/oinspect.py
@@ -339,7 +339,7 @@ def find_source_lines(obj, return_length=False):
             lines = inspect.getsourcelines(obj.__class__)
         except (OSError, TypeError):
             return None
-    except OSError:
+    except:
         return None
 
     if return_length: