diff --git a/src/apps.js b/src/apps.js
index 6a47726ba..f5f8c8bec 100644
--- a/src/apps.js
+++ b/src/apps.js
@@ -143,7 +143,7 @@ function AppsError(reason, errorOrMessage, details) {
         this.nestedError = errorOrMessage;
     }
 
-    if (details) error.details = details;
+    this.details = _.extend({ reason }, details || {});
 }
 util.inherits(AppsError, Error);
 AppsError.INTERNAL_ERROR = 'Internal Error';