diff --git a/src/vm.c b/src/vm.c
index fe622861e..3f3ca414f 100644
--- a/src/vm.c
+++ b/src/vm.c
@@ -1261,9 +1261,7 @@ RETRY_TRY_BLOCK:
       /* A      A.times{rescue_pop()} */
       int a = GETARG_A(i);
 
-      while (a--) {
-        mrb->c->ci->ridx--;
-      }
+      mrb->c->ci->ridx -= a;
       NEXT;
     }