diff --git a/src/util-mem.h b/src/util-mem.h
index 62f5899..c77351a 100644
--- a/src/util-mem.h
+++ b/src/util-mem.h
@@ -41,7 +41,7 @@ static inline void _free_ptr_(void *p) { free(*(void**)p); }
 
 /**
  * Use:
- * DEFINE_TRIVIAL_CLEANUP_FUNC(struct foo, foo_unref)
+ * DEFINE_TRIVIAL_CLEANUP_FUNC(struct foo *, foo_unref)
  * _cleanup_(foo_unrefp) struct foo *bar;
  */
 #define DEFINE_TRIVIAL_CLEANUP_FUNC(_type, _func)		\