diff --git a/HpcParser.y b/HpcParser.y
index 74893e46eaec9860973b5df61f7d78dfdc4355e0..cf1d156c6efbd3634d3d70490b39436c6cd41a01 100644
--- a/HpcParser.y
+++ b/HpcParser.y
@@ -1,5 +1,5 @@
 { 
-{-# OPTIONS -w #-}
+{-# OPTIONS -Wwarn #-}
 -- The above warning supression flag is a temporary kludge.
 -- While working on this module you are encouraged to remove it and fix
 -- any warnings in the module. See