diff --git a/compile.c b/compile.c
index e9602718bd..80e0a5d023 100644
--- a/compile.c
+++ b/compile.c
@@ -483,7 +483,7 @@ static INSN *new_insn_body(rb_iseq_t *iseq, int line_no, enum ruby_vminsn_type i
 static LABEL *new_label_body(rb_iseq_t *iseq, long line);
 static ADJUST *new_adjust_body(rb_iseq_t *iseq, LABEL *label, int line);
 
-static int iseq_compile_each(rb_iseq_t *iseq, LINK_ANCHOR *const anchor, const NODE *n, int);
+static int iseq_compile_each(rb_iseq_t *iseq, LINK_ANCHOR *anchor, const NODE *n, int);
 static int iseq_setup(rb_iseq_t *iseq, LINK_ANCHOR *const anchor);
 static int iseq_optimize(rb_iseq_t *iseq, LINK_ANCHOR *const anchor);
 static int iseq_insns_unification(rb_iseq_t *iseq, LINK_ANCHOR *const anchor);
@@ -5110,7 +5110,7 @@ static int iseq_compile_each0(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NOD
   popped: This node will be popped
  */
 static int
-iseq_compile_each(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node, int popped)
+iseq_compile_each(rb_iseq_t *iseq, LINK_ANCHOR *ret, const NODE *node, int popped)
 {
     if (node == 0) {
 	if (!popped) {