diff --git a/assets/javascripts/discourse/initializers/extend-for-assigns.js b/assets/javascripts/discourse/initializers/extend-for-assigns.js
index ca14210f..0f9d35b7 100644
--- a/assets/javascripts/discourse/initializers/extend-for-assigns.js
+++ b/assets/javascripts/discourse/initializers/extend-for-assigns.js
@@ -480,7 +480,7 @@ function initialize(api) {
   }
 
   api.addPostSmallActionClassesCallback((post) => {
-    if (post.actionCode.includes("assigned") && !siteSettings.assigns_public) {
+    if (!!post.actionCode && post.actionCode.includes("assigned") && !siteSettings.assigns_public) {
       return ["private-assign"];
     }
   });