diff --git a/INSTALL.md b/INSTALL.md
index 85affd1..d925d65 100644
--- a/INSTALL.md
+++ b/INSTALL.md
@@ -45,4 +45,4 @@
 
 for python 2.6 or 2.7
 
-$ python -m wally.__main__ test "my test comment" CONFIG_FILE
+$ python -m wally.\_\_main\_\_ test "my test comment" CONFIG_FILE