diff --git a/ghc/compiler/basicTypes/OccName.lhs b/ghc/compiler/basicTypes/OccName.lhs
index 4ecd069360b90634324d1d0b36fd434e400528fb..bc08698e7018bc02a60d07d1ebdf1d211cf93d72 100644
--- a/ghc/compiler/basicTypes/OccName.lhs
+++ b/ghc/compiler/basicTypes/OccName.lhs
@@ -38,7 +38,11 @@ module OccName (
 
 #include "HsVersions.h"
 
+#if __HASKELL1__ > 4
+import Char	( isAlpha, isUpper, isLower, isAlphaNum{-sigh-}, ord )
+#else
 import Char	( isAlpha, isUpper, isLower, isAlphanum, ord )
+#endif
 import Util	( thenCmp )
 import FiniteMap ( FiniteMap, emptyFM, lookupFM, addToFM, elemFM )
 import Outputable