diff --git a/static/app-strings.json b/static/app-strings.json
index a495053c0a4..1c3c52bee7a 100644
--- a/static/app-strings.json
+++ b/static/app-strings.json
@@ -1422,6 +1422,8 @@
   "Controversial": "Controversial",
   "Show Replies": "Show Replies",
   "Unable to create comment, please try again later.": "Unable to create comment, please try again later.",
+  "Unable to comment. This channel has blocked you.": "Unable to comment. This channel has blocked you.",
+  "The comment contains contents that are blocked by %author%": "The comment contains contents that are blocked by %author%",
   "Your channel is still being setup, try again in a few moments.": "Your channel is still being setup, try again in a few moments.",
   "Unable to delete this comment, please try again later.": "Unable to delete this comment, please try again later.",
   "Unable to edit this comment, please try again later.": "Unable to edit this comment, please try again later.",
diff --git a/ui/redux/actions/comments.js b/ui/redux/actions/comments.js
index b98b01b08ac..36a3a5a0578 100644
--- a/ui/redux/actions/comments.js
+++ b/ui/redux/actions/comments.js
@@ -309,6 +309,17 @@ export function doCommentCreate(
           toastMessage = __('Unable to comment. This channel has blocked you.');
         }
 
+        if (error) {
+          const BLOCKED_WORDS_ERR_MSG = 'the comment contents are blocked by';
+
+          if (error.message === 'channel is blocked by publisher') {
+            toastMessage = __('Unable to comment. This channel has blocked you.');
+          } else if (error.message.startsWith(BLOCKED_WORDS_ERR_MSG)) {
+            const channelName = error.message.substring(BLOCKED_WORDS_ERR_MSG.length);
+            toastMessage = __('The comment contains contents that are blocked by %author%', { author: channelName });
+          }
+        }
+
         dispatch(
           doToast({
             message: toastMessage,