diff --git a/src/bootstrap.js b/src/bootstrap.js
index a763e256..3bbf6adc 100644
--- a/src/bootstrap.js
+++ b/src/bootstrap.js
@@ -17,7 +17,14 @@
 
 
   // Loads the data-main module automatically.
-  config.main && seajs.use(config.main)
+  if (config.src) {
+    seajs.use(config.src, function(){
+      config.main && seajs.use(config.main)
+  })
+  }
+  else {
+    config.main && seajs.use(config.main)
+  }
 
   // Parses the pre-call of seajs.config/seajs.use/define.
   // Ref: test/bootstrap/async-3.html