1 files changed, 1 insertions, 1 deletions
diff --git a/vm.c b/vm.c
index e6a2a6d84f..c8f0a29187 100644
--- a/vm.c
+++ b/vm.c
@@ -1414,7 +1414,7 @@ rb_iseq_eval_main(VALUE iseqval)
 }
 
 int
-rb_vm_control_frame_id_and_class(rb_control_frame_t *cfp, ID *idp, VALUE *klassp)
+rb_vm_control_frame_id_and_class(const rb_control_frame_t *cfp, ID *idp, VALUE *klassp)
 {
     rb_iseq_t *iseq = cfp->iseq;
     if (!iseq && cfp->me) {