diff --git a/Lib/test/test_mailbox.py b/Lib/test/test_mailbox.py
index e28d721f0aa..382a42e774f 100644
--- a/Lib/test/test_mailbox.py
+++ b/Lib/test/test_mailbox.py
@@ -21,8 +21,8 @@
 
 finally:
     try: os.rmdir(newdir)
-    except IOError: pass
+    except os.error: pass
     try: os.rmdir(curdir)
-    except IOError: pass
+    except os.error: pass
     try: os.rmdir(test_support.TESTFN)
-    except IOError: pass
+    except os.error: pass