diff --git a/app/javascript/mastodon/actions/compose.js b/app/javascript/mastodon/actions/compose.js
index fac8d32a125..86d83122fc1 100644
--- a/app/javascript/mastodon/actions/compose.js
+++ b/app/javascript/mastodon/actions/compose.js
@@ -142,7 +142,7 @@ export function submitCompose(routerHistory) {
         }
       };
 
-      if (response.data.visibility === 'direct' && getState().getIn(['conversations', 'mounted']) <= 0) {
+      if (response.data.visibility === 'direct' && getState().getIn(['conversations', 'mounted']) <= 0 && routerHistory) {
         routerHistory.push('/timelines/direct');
       } else if (response.data.visibility !== 'direct') {
         insertIfOnline('home');
diff --git a/app/javascript/mastodon/features/compose/components/compose_form.js b/app/javascript/mastodon/features/compose/components/compose_form.js
index 27178fe1981..0625ab22321 100644
--- a/app/javascript/mastodon/features/compose/components/compose_form.js
+++ b/app/javascript/mastodon/features/compose/components/compose_form.js
@@ -88,7 +88,7 @@ class ComposeForm extends ImmutablePureComponent {
       return;
     }
 
-    this.props.onSubmit(this.context.router.history);
+    this.props.onSubmit(this.context.router ? this.context.router.history : null);
   }
 
   onSuggestionsClearRequested = () => {