diff --git a/ghc/lib/ghc/GHC.hi-boot b/ghc/lib/ghc/GHC.hi-boot
index 35e2fc293f0806a64398cb917cfdf142f349dd2f..bf73fbe04e82f1d489551fa9ad817d3042456ba9 100644
--- a/ghc/lib/ghc/GHC.hi-boot
+++ b/ghc/lib/ghc/GHC.hi-boot
@@ -169,6 +169,7 @@ GHC
   quotRemInteger#
   integer2Int#
   int2Integer#
+  word2Integer#
   
   Array#
   ByteArray#