diff --git a/compiler/codeGen/CgHeapery.lhs b/compiler/codeGen/CgHeapery.lhs
index bc3e1083473adda50cd049135064422143eee5e3..174e510cb5f0bb34b9b382f15a47821474e68fcc 100644
--- a/compiler/codeGen/CgHeapery.lhs
+++ b/compiler/codeGen/CgHeapery.lhs
@@ -439,7 +439,7 @@ do_checks _ hp _ _
   = sorry (unlines [
             "Trying to allocate more than " ++ show (bLOCKS_PER_MBLOCK * bLOCK_SIZE) ++ " bytes.", 
             "",
-            "See: http://hackage.haskell.org/trac/ghc/ticket/4550",
+            "See: http://hackage.haskell.org/trac/ghc/ticket/4505",
             "Suggestion: read data from a file instead of having large static data",
             "structures in the code."])