diff --git a/include/cxx/cstdio b/include/cxx/cstdio
index ff64f59196..1b31adb2bf 100644
--- a/include/cxx/cstdio
+++ b/include/cxx/cstdio
@@ -94,3 +94,4 @@ namespace std
 }
 
 #endif // __INCLUDE_CXX_CSTDIO
+