diff --git a/applet.h b/applet.h
index 61ba975b2..ec914c0c2 100644
--- a/applet.h
+++ b/applet.h
@@ -284,6 +284,7 @@ class PLASMA_EXPORT Applet : public QGraphicsWidget
 
         /**
          * Returns a list of all known applets.
+         * This may skip applets based on security settings and ExcludeCategories in the application's config.
          *
          * @param category Only applets matchin this category will be returned.
          *                 Useful in conjunction with knownCategories.