diff --git a/framework/core/js/forum/src/components/composer-body.js b/framework/core/js/forum/src/components/composer-body.js
index 4ee024041..e2fbd0ce4 100644
--- a/framework/core/js/forum/src/components/composer-body.js
+++ b/framework/core/js/forum/src/components/composer-body.js
@@ -41,7 +41,7 @@ export default class ComposerBody extends Component {
   }
 
   preventExit() {
-    return this.content() != this.props.originalContent && !confirm(this.props.confirmExit);
+    return this.content() && this.content() != this.props.originalContent && !confirm(this.props.confirmExit);
   }
 
   onsubmit(value) {