diff --git a/app/javascript/mastodon/reducers/statuses.js b/app/javascript/mastodon/reducers/statuses.js
index 6e3d830da..885cc221c 100644
--- a/app/javascript/mastodon/reducers/statuses.js
+++ b/app/javascript/mastodon/reducers/statuses.js
@@ -38,11 +38,11 @@ export default function statuses(state = initialState, action) {
   case FAVOURITE_REQUEST:
     return state.setIn([action.status.get('id'), 'favourited'], true);
   case FAVOURITE_FAIL:
-    return state.setIn([action.status.get('id'), 'favourited'], false);
+    return state.get(action.status.get('id')) === undefined ? state : state.setIn([action.status.get('id'), 'favourited'], false);
   case REBLOG_REQUEST:
     return state.setIn([action.status.get('id'), 'reblogged'], true);
   case REBLOG_FAIL:
-    return state.setIn([action.status.get('id'), 'reblogged'], false);
+    return state.get(action.status.get('id')) === undefined ? state : state.setIn([action.status.get('id'), 'reblogged'], false);
   case STATUS_MUTE_SUCCESS:
     return state.setIn([action.id, 'muted'], true);
   case STATUS_UNMUTE_SUCCESS: