diff --git a/app/javascript/mastodon/reducers/filters.js b/app/javascript/mastodon/reducers/filters.js
index cc1d3349c59a928017d65c4e5253e34e64cf436d..f4f97cd3a8a8cbb2bc8711c7f19349cb90686536 100644
--- a/app/javascript/mastodon/reducers/filters.js
+++ b/app/javascript/mastodon/reducers/filters.js
@@ -35,7 +35,7 @@ export default function filters(state = ImmutableMap(), action) {
   case FILTERS_CREATE_SUCCESS:
     return normalizeFilter(state, action.filter);
   case FILTERS_FETCH_SUCCESS:
-    //TODO: handle deleting obsolete filters
+    return normalizeFilters(ImmutableMap(), action.filters);
   case FILTERS_IMPORT:
     return normalizeFilters(state, action.filters);
   default: