diff --git a/test/regbuf-clone.c b/test/regbuf-clone.c
index c391260ee..aff7b8c48 100644
--- a/test/regbuf-clone.c
+++ b/test/regbuf-clone.c
@@ -11,6 +11,7 @@
 #include <string.h>
 #include <limits.h>
 #include <sys/mman.h>
+#include <linux/mman.h>
 
 #include "liburing.h"
 #include "helpers.h"