diff --git a/example/hello-world/hello.ixx b/example/hello-world/hello.cppm
similarity index 94%
rename from example/hello-world/hello.ixx
rename to example/hello-world/hello.cppm
index 1b188b7..67c7369 100644
--- a/example/hello-world/hello.ixx
+++ b/example/hello-world/hello.cppm
@@ -1,4 +1,4 @@
-// hello.ixx
+// hello.cppm
 export module hello;
 
 import <iostream>;