diff --git a/src/worker-privs.c b/src/worker-privs.c
index ae0b375d..0b285113 100644
--- a/src/worker-privs.c
+++ b/src/worker-privs.c
@@ -128,6 +128,7 @@ int disable_system_calls(struct worker_st *ws)
 	ADD_SYSCALL(getrusage, 0);
 	ADD_SYSCALL(alarm, 0);
 	ADD_SYSCALL(getpid, 0);
+	ADD_SYSCALL(futex, 0);
 
 	/* memory allocation - both are used by different platforms */
 	ADD_SYSCALL(brk, 0);