diff --git a/src/util-stringbuf.h b/src/util-stringbuf.h
index a11d7f28..e7957d27 100644
--- a/src/util-stringbuf.h
+++ b/src/util-stringbuf.h
@@ -28,6 +28,7 @@
 #include <unistd.h>
 
 #include "util-macros.h"
+#include "util-mem.h"
 
 struct stringbuf {
 	char *data;
@@ -74,6 +75,8 @@ stringbuf_destroy(struct stringbuf *b)
 	free(b);
 }
 
+DEFINE_DESTROY_CLEANUP_FUNC(stringbuf);
+
 static inline char *
 stringbuf_steal_destroy(struct stringbuf *b)
 {