diff --git a/lib/superagent-mock.js b/lib/superagent-mock.js
index c293751..0ea67b9 100755
--- a/lib/superagent-mock.js
+++ b/lib/superagent-mock.js
@@ -173,7 +173,11 @@ function mock (superagent, config, logger) {
             getResponseHeader: function () {return err.responseHeader || 'a header';}
           }
       });
-      response.setStatusProperties(err.message);
+      if (response._setStatusProperties) {
+        response._setStatusProperties(err.message);
+      } else {
+        response.setStatusProperties(err.message);
+      }
     }
 
     fn(error, response);