diff --git a/lib/src/demo/Compile.hs b/lib/src/demo/Compile.hs
index ac06be1d0..1396c5489 100644
--- a/lib/src/demo/Compile.hs
+++ b/lib/src/demo/Compile.hs
@@ -1,5 +1,6 @@
-import List
-import System
+import Data.List
+import System.Cmd
+import System.Environment
 
 -- (c) Aarne Ranta 2010 under GNU LGPL