diff --git a/js/forum/src/components/DiscussionComposer.js b/js/forum/src/components/DiscussionComposer.js
index 54bcd5810..7049e21ff 100644
--- a/js/forum/src/components/DiscussionComposer.js
+++ b/js/forum/src/components/DiscussionComposer.js
@@ -42,7 +42,7 @@ export default class DiscussionComposer extends ComposerBody {
           oninput={m.withAttr('value', this.title)}
           placeholder={this.props.titlePlaceholder}
           disabled={!!this.props.disabled}
-          onkeydown={this.onkeydown}/>
+          onkeydown={this.onkeydown.bind(this)}/>
       </h3>
     ));