diff --git a/flask/__main__.py b/flask/__main__.py
index cbcdebf1..78362293 100644
--- a/flask/__main__.py
+++ b/flask/__main__.py
@@ -11,5 +11,5 @@
 
 
 if __name__ == '__main__':
-    from cli import main
+    from .cli import main
     main(as_module=True)