diff --git a/src/components/roomInfoMixin.js b/src/components/roomInfoMixin.js
index 83ad8d4..d6c1099 100644
--- a/src/components/roomInfoMixin.js
+++ b/src/components/roomInfoMixin.js
@@ -79,6 +79,9 @@ export default {
     },
   },
   methods: {
+    setRoomJoinRule(ignoredJoinRule) {
+      // Do nothing in the general mixin, override in RoomInfo.vue
+    },
     getRoomJoinRule() {
       return this.$matrix.getRoomJoinRule(this.room);
     },