diff --git a/plantuml-mode.el b/plantuml-mode.el
index e40ba0d..41b519e 100644
--- a/plantuml-mode.el
+++ b/plantuml-mode.el
@@ -750,7 +750,7 @@ Shortcuts             Command Name
   "Warns the user about the deprecation of the `puml-mode' project."
   (if (and plantuml-suppress-deprecation-warning
            (featurep 'puml-mode))
-      (display-warning :warning
+      (display-warning 'plantuml-mode
                        "`puml-mode' is now deprecated and no longer updated, but it's still present in your system. \
 You should move your configuration to use `plantuml-mode'. \
 See more at https://github.com/skuro/puml-mode/issues/26")))