1 files changed, 4 insertions, 4 deletions
diff --git a/ruby.h b/ruby.h
index 7bdc827720..940896476d 100644
--- a/ruby.h
+++ b/ruby.h
@@ -497,10 +497,10 @@ VALUE rb_eval_string _((const char*));
 VALUE rb_eval_string_protect _((const char*, int*));
 VALUE rb_eval_string_wrap _((const char*, int*));
 VALUE rb_funcall __((VALUE, ID, int, ...));
-VALUE rb_funcall2 _((VALUE, ID, int, VALUE*));
-VALUE rb_funcall3 _((VALUE, ID, int, VALUE*));
-int rb_scan_args __((int, VALUE*, const char*, ...));
-VALUE rb_call_super _((int, VALUE*));
+VALUE rb_funcall2 _((VALUE, ID, int, const VALUE*));
+VALUE rb_funcall3 _((VALUE, ID, int, const VALUE*));
+int rb_scan_args __((int, const VALUE*, const char*, ...));
+VALUE rb_call_super _((int, const VALUE*));
 
 VALUE rb_gv_set _((const char*, VALUE));
 VALUE rb_gv_get _((const char*));