1 files changed, 1 insertions, 2 deletions
diff --git a/proc.c b/proc.c
index f40e9daf10..7fae4f97ed 100644
--- a/proc.c
+++ b/proc.c
@@ -12,6 +12,7 @@
 #include "eval_intern.h"
 #include "internal.h"
 #include "gc.h"
+#include "iseq.h"
 
 struct METHOD {
     VALUE recv;
@@ -25,8 +26,6 @@ VALUE rb_cMethod;
 VALUE rb_cBinding;
 VALUE rb_cProc;
 
-VALUE rb_iseq_parameters(const rb_iseq_t *iseq, int is_proc);
-
 static VALUE bmcall(VALUE, VALUE);
 static int method_arity(VALUE);
 rb_iseq_t *rb_method_get_iseq(VALUE method);