diff --git a/ChangeLog b/ChangeLog
index 85e11ed6b5..3f47994812 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Tue Oct  6 19:23:58 2015  Koichi Sasada  <ko1@atdot.net>
+
+	* proc.c (Init_Proc): Proc#call and others should be public.
+
 Tue Oct  6 18:51:51 2015  Koichi Sasada  <ko1@atdot.net>
 
 	* method.h: IMEMO_FL_USER3 and IMEMO_FL_USER4 is not needed any more.
diff --git a/proc.c b/proc.c
index b84a4fc9d9..f210464ec3 100644
--- a/proc.c
+++ b/proc.c
@@ -2805,13 +2805,13 @@ Init_Proc(void)
     rb_define_singleton_method(rb_cProc, "new", rb_proc_s_new, -1);
 
     rb_add_method(rb_cProc, rb_intern("call"), VM_METHOD_TYPE_OPTIMIZED,
-		  (void *)OPTIMIZED_METHOD_TYPE_CALL, 0);
+		  (void *)OPTIMIZED_METHOD_TYPE_CALL, METHOD_VISI_PUBLIC);
     rb_add_method(rb_cProc, rb_intern("[]"), VM_METHOD_TYPE_OPTIMIZED,
-		  (void *)OPTIMIZED_METHOD_TYPE_CALL, 0);
+		  (void *)OPTIMIZED_METHOD_TYPE_CALL, METHOD_VISI_PUBLIC);
     rb_add_method(rb_cProc, rb_intern("==="), VM_METHOD_TYPE_OPTIMIZED,
-		  (void *)OPTIMIZED_METHOD_TYPE_CALL, 0);
+		  (void *)OPTIMIZED_METHOD_TYPE_CALL, METHOD_VISI_PUBLIC);
     rb_add_method(rb_cProc, rb_intern("yield"), VM_METHOD_TYPE_OPTIMIZED,
-		  (void *)OPTIMIZED_METHOD_TYPE_CALL, 0);
+		  (void *)OPTIMIZED_METHOD_TYPE_CALL, METHOD_VISI_PUBLIC);
 
     rb_define_method(rb_cProc, "to_proc", proc_to_proc, 0);
     rb_define_method(rb_cProc, "arity", proc_arity, 0);