minor modify
diff --git a/samples/foo/src/main/resources/application.yaml b/samples/foo/src/main/resources/application.yaml
index e70d463..4943342 100644
--- a/samples/foo/src/main/resources/application.yaml
+++ b/samples/foo/src/main/resources/application.yaml
@@ -4,6 +4,6 @@
 
 infras:
   mvc:
-    error:
+    custom-error:
       error-map:
         com.supwisdom.leaveschool.foo.model.BarException: Bar Reason