1 files changed, 1 insertions, 0 deletions
diff --git a/Square.hs b/Square.hs
index 83ddb6b..48b9427 100644
--- a/Square.hs
+++ b/Square.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE MultiParamTypeClasses #-}
 -----------------------------------------------------------------------------
 -- |
 -- Module      :  XMonadContrib.Square