diff --git a/test/ConstantsDemo.thrift b/test/ConstantsDemo.thrift
index 8cc6a1f..0b9d839 100644
--- a/test/ConstantsDemo.thrift
+++ b/test/ConstantsDemo.thrift
@@ -1,4 +1,4 @@
-cpp_namespace yozone
+namespace cpp yozone
 
 struct thing {
   1: i32 hello,