diff --git a/src/components/views/dialogs/CreateRoomDialog.js b/src/components/views/dialogs/CreateRoomDialog.js
index 88e90627e8..f18e28b85e 100644
--- a/src/components/views/dialogs/CreateRoomDialog.js
+++ b/src/components/views/dialogs/CreateRoomDialog.js
@@ -66,7 +66,7 @@ export default createReactClass({
         }
 
         if (!this.state.isPublic && SettingsStore.isFeatureEnabled("feature_cross_signing")) {
-            createOpts.encryption = this.state.isEncrypted;
+            opts.encryption = this.state.isEncrypted;
         }
 
         return opts;