diff --git a/sandbox-seccomp-filter.c b/sandbox-seccomp-filter.c
index f80981faf..e0768c063 100644
--- a/sandbox-seccomp-filter.c
+++ b/sandbox-seccomp-filter.c
@@ -43,6 +43,7 @@
 #include <sys/resource.h>
 #include <sys/prctl.h>
 #include <sys/mman.h>
+#include <sys/syscall.h>
 
 #include <linux/net.h>
 #include <linux/audit.h>