diff --git a/castellan/common/exception.py b/castellan/common/exception.py
index cccea91c..f45db7a4 100644
--- a/castellan/common/exception.py
+++ b/castellan/common/exception.py
@@ -43,9 +43,9 @@ class CastellanException(Exception):
             message_arg = self.message
         try:
             self.message = message_arg % kwargs
-        except Exception as e:
+        except Exception:
             if _FATAL_EXCEPTION_FORMAT_ERRORS:
-                raise e
+                raise
             else:
                 # at least get the core message out if something happened
                 pass