1 files changed, 1 insertions, 1 deletions
diff --git a/vm_dump.c b/vm_dump.c
index 179c132a74..f843371390 100644
--- a/vm_dump.c
+++ b/vm_dump.c
@@ -336,7 +336,7 @@ rb_vmdebug_thread_dump_regs(VALUE thval)
 }
 
 void
-rb_vmdebug_debug_print_pre(rb_thread_t *th, rb_control_frame_t *cfp,VALUE *_pc)
+rb_vmdebug_debug_print_pre(rb_thread_t *th, rb_control_frame_t *cfp, const VALUE *_pc)
 {
     const rb_iseq_t *iseq = cfp->iseq;