1 files changed, 3 insertions, 2 deletions
diff --git a/ractor.c b/ractor.c
index 0817a1b5c8..89b4f68afb 100644
--- a/ractor.c
+++ b/ractor.c
@@ -1394,8 +1394,9 @@ cancel_single_ractor_mode(void)
     rb_transient_heap_evacuate();
 
     if (rb_warning_category_enabled_p(RB_WARN_CATEGORY_EXPERIMENTAL)) {
-        rb_warn("Ractor is experimental, and the behavior may change in future versions of Ruby! "
-                "Also there are many implementation issues.");
+        rb_category_warn(RB_WARN_CATEGORY_EXPERIMENTAL,
+                         "Ractor is experimental, and the behavior may change in future versions of Ruby! "
+                         "Also there are many implementation issues.");
     }
 
     ruby_single_main_ractor = NULL;