diff --git a/src/core/5.inject.js b/src/core/5.inject.js
index fe4f5133e..9e0ae8503 100644
--- a/src/core/5.inject.js
+++ b/src/core/5.inject.js
@@ -81,10 +81,10 @@
     BI.service = BI.service || function (xtype, cls) {
         if (serviceInjection[xtype] != null) {
             _global.console && console.error("service: [" + xtype + "] 已经注册过了");
-        } else {
-            serviceInjection[xtype] = cls;
         }
 
+        serviceInjection[xtype] = cls;
+
         return function (config) {
             return BI.Services.getService(xtype, config);
         };