diff --git a/flask.py b/flask.py
index a8e06bd3..bf4451c7 100644
--- a/flask.py
+++ b/flask.py
@@ -1424,8 +1424,3 @@ current_app = LocalProxy(lambda: _request_ctx_stack.top.app)
 request = LocalProxy(lambda: _request_ctx_stack.top.request)
 session = LocalProxy(lambda: _request_ctx_stack.top.session)
 g = LocalProxy(lambda: _request_ctx_stack.top.g)
-
-
-# script interface to run a development server
-if __name__ == '__main__':
-    sys.exit(main(sys.argv))