diff --git a/Lib/ctypes/macholib/dyld.py b/Lib/ctypes/macholib/dyld.py
index 376f65d..011a371 100644
--- a/Lib/ctypes/macholib/dyld.py
+++ b/Lib/ctypes/macholib/dyld.py
@@ -148,7 +148,7 @@
     """
     try:
         return dyld_find(fn, executable_path=executable_path, env=env)
-    except ValueError, e:
+    except ValueError as e:
         pass
     fmwk_index = fn.rfind('.framework')
     if fmwk_index == -1: