diff --git a/racket/src/racket/src/jitcommon.c b/racket/src/racket/src/jitcommon.c
index 41b75b7652..a8af6168fd 100644
--- a/racket/src/racket/src/jitcommon.c
+++ b/racket/src/racket/src/jitcommon.c
@@ -92,12 +92,8 @@ static void apply_prim_to_fail(int argc, Scheme_Object **argv, void *_p)
 static Scheme_Object *vector_check_chaperone_of(Scheme_Object *o, Scheme_Object *orig, int setter)
 {
   if (!scheme_chaperone_of(o, orig))
-    scheme_contract_error((setter ? "vector-set!" : "vector-ref"),
-                          "chaperone produced a result that is not a chaperone of the original result",
-                          "chaperone result", 1, o,
-                          "original result", 1, o,
-                          NULL);
-  
+    scheme_wrong_chaperoned((setter ? "vector-set!" : "vector-ref"), "result", orig, o);
+
   return o;
 }