1 files changed, 1 insertions, 1 deletions
diff --git a/src/vm.c b/src/vm.c
index 331627caa..a9c369d49 100644
--- a/src/vm.c
+++ b/src/vm.c
@@ -223,7 +223,7 @@ mrb_stack_extend(mrb_state *mrb, mrb_int room)
 }
 
 static inline struct REnv*
-uvenv(mrb_state *mrb, int up)
+uvenv(mrb_state *mrb, mrb_int up)
 {
   const struct RProc *proc = mrb->c->ci->proc;
   struct REnv *e;