1 files changed, 2 insertions, 1 deletions
diff --git a/tests/headers/issue-493.hpp b/tests/headers/issue-493.hpp
index 975ef5ce..ea39c83c 100644
--- a/tests/headers/issue-493.hpp
+++ b/tests/headers/issue-493.hpp
@@ -1,3 +1,4 @@
+// bindgen-flags: --with-derive-hash
 template<class _CharT, class _Traits, class _Allocator>
 class basic_string
 {
@@ -44,4 +45,4 @@ public:
             __raw   __r;
         };
     };
-};
-\ No newline at end of file
+};