diff --git a/linux-user/main.c b/linux-user/main.c
index 7f15d3da2b..99c3b3f5ef 100644
--- a/linux-user/main.c
+++ b/linux-user/main.c
@@ -2028,7 +2028,7 @@ static const uint8_t mips_syscall_args[] = {
 	MIPS_SYS(sys_fremovexattr, 2)	/* 4235 */
 	MIPS_SYS(sys_tkill	, 2)
 	MIPS_SYS(sys_sendfile64	, 5)
-	MIPS_SYS(sys_futex	, 2)
+	MIPS_SYS(sys_futex	, 6)
 	MIPS_SYS(sys_sched_setaffinity, 3)
 	MIPS_SYS(sys_sched_getaffinity, 3)	/* 4240 */
 	MIPS_SYS(sys_io_setup	, 2)