diff --git a/app/javascript/mastodon/reducers/compose.js b/app/javascript/mastodon/reducers/compose.js
index 51508c777d8..f2cb8f4de73 100644
--- a/app/javascript/mastodon/reducers/compose.js
+++ b/app/javascript/mastodon/reducers/compose.js
@@ -446,6 +446,7 @@ export const composeReducer = (state = initialState, action) => {
     return state.set('is_submitting', true);
 
   case COMPOSE_REPLY_CANCEL:
+    return state.set('in_reply_to', null);
   case COMPOSE_RESET:
   case COMPOSE_SUBMIT_SUCCESS:
     return clearAll(state);