diff --git a/modules/angular2/src/core/application_ref.ts b/modules/angular2/src/core/application_ref.ts
index 345c862a1844..a37815eac6ae 100644
--- a/modules/angular2/src/core/application_ref.ts
+++ b/modules/angular2/src/core/application_ref.ts
@@ -456,11 +456,10 @@ export class ApplicationRef_ extends ApplicationRef {
     });
     return completer.promise.then(_ => {
       let c = this._injector.get(Console);
-      let modeDescription =
-          assertionsEnabled() ?
-              "in the development mode. Call enableProdMode() to enable the production mode." :
-              "in the production mode. Call enableDevMode() to enable the development mode.";
-      c.log(`Angular 2 is running ${modeDescription}`);
+      if (assertionsEnabled()) {
+        c.log(
+            "Angular 2 is running in the development mode. Call enableProdMode() to enable the production mode.");
+      }
       return _;
     });
   }