diff --git a/Lib/MimeWriter.py b/Lib/MimeWriter.py
index 0f8b990dfcd..754576bb20a 100644
--- a/Lib/MimeWriter.py
+++ b/Lib/MimeWriter.py
@@ -125,4 +125,4 @@ def lastpart(self):
 
 
 if __name__ == '__main__':
-    print "To test the MimeWriter module, run TestMimeWriter.py."
+    import test.test_MimeWriter