diff --git a/geg/util/gconv/gconv_struct1.go b/geg/util/gconv/gconv_struct1.go
index 1b2906560..5481c1599 100644
--- a/geg/util/gconv/gconv_struct1.go
+++ b/geg/util/gconv/gconv_struct1.go
@@ -22,7 +22,7 @@ func main() {
         "uid"   : 1,
         "Name"  : "john",
         "PASS1" : "123",
-        "PASS2" : "456",
+        "PaSs2" : "456",
     }
     if err := gconv.Struct(params1, user); err == nil {
         fmt.Println(user)