diff --git a/Prelude.hs b/Prelude.hs
index 577b751b5812ee10abce59cdc50e27622e7ba44b..145c748024c7df33107ab85685e58b3ffff666d4 100644
--- a/Prelude.hs
+++ b/Prelude.hs
@@ -150,7 +150,6 @@ import GHC.Real hiding ( gcd )
 import qualified GHC.Real ( gcd )
 import GHC.Float
 import GHC.Show
-import GHC.Err   ( undefined )
 #endif
 
 #ifdef __HUGS__