diff --git a/autocrop/autocrop.py b/autocrop/autocrop.py
index 33196a6..cdabbdb 100644
--- a/autocrop/autocrop.py
+++ b/autocrop/autocrop.py
@@ -33,7 +33,7 @@
 
 
 # Load custom exception to catch a certain failure type
-def ImageReadError(Exception):
+def ImageReadError(BaseException):
     pass