diff --git a/Lib/pdb.py b/Lib/pdb.py
index de769bb87a6..fae6b2c6044 100755
--- a/Lib/pdb.py
+++ b/Lib/pdb.py
@@ -893,4 +893,4 @@ if __name__=='__main__':
 	# Insert script directory in front of module search path
 	sys.path.insert(0, os.path.dirname(filename))
 
-	run('execfile(' + `filename` + ')', {'__name__': '__main__'})
+	run('execfile(' + `filename` + ')')