diff --git a/app/javascript/mastodon/actions/statuses.js b/app/javascript/mastodon/actions/statuses.js
index 8d385715..2204e0b1 100644
--- a/app/javascript/mastodon/actions/statuses.js
+++ b/app/javascript/mastodon/actions/statuses.js
@@ -113,7 +113,7 @@ export function fetchContext(id) {
       dispatch(fetchContextSuccess(id, response.data.ancestors, response.data.descendants));
 
     }).catch(error => {
-      if (error.response.status === 404) {
+      if (error.response && error.response.status === 404) {
         dispatch(deleteFromTimelines(id));
       }
 
diff --git a/app/javascript/mastodon/actions/timelines.js b/app/javascript/mastodon/actions/timelines.js
index dd14cb1c..5c0cd93c 100644
--- a/app/javascript/mastodon/actions/timelines.js
+++ b/app/javascript/mastodon/actions/timelines.js
@@ -105,7 +105,7 @@ export function refreshTimelineFail(timeline, error, skipLoading) {
     timeline,
     error,
     skipLoading,
-    skipAlert: error.response.status === 404,
+    skipAlert: error.response && error.response.status === 404,
   };
 };