diff --git a/dashboard/src/models/AppsModel.js b/dashboard/src/models/AppsModel.js
index 4e3318cd8..df8abe72b 100644
--- a/dashboard/src/models/AppsModel.js
+++ b/dashboard/src/models/AppsModel.js
@@ -129,7 +129,7 @@ function create() {
     }
 
     if (app.manifest.postInstallMessage) {
-      var text= app.manifest.postInstallMessage;
+      let text = app.manifest.postInstallMessage;
       // we chose - because underscore has special meaning in markdown
       text = text.replace(/\$CLOUDRON-APP-LOCATION/g, app.subdomain);
       text = text.replace(/\$CLOUDRON-APP-DOMAIN/g, app.domain);