diff --git a/memcheck/mc_translate.c b/memcheck/mc_translate.c
index e8508cf..1e2a7a9 100644
--- a/memcheck/mc_translate.c
+++ b/memcheck/mc_translate.c
@@ -2505,7 +2505,7 @@
 }
 
 
-IRBB* TL_(instrument) ( IRBB* bb_in, VexGuestLayout* layout, 
+IRBB* MC_(instrument) ( IRBB* bb_in, VexGuestLayout* layout, 
                         IRType gWordTy, IRType hWordTy )
 {
    Bool verboze = False; //True;