diff --git a/sys/amd64/linux32/syscalls.master b/sys/amd64/linux32/syscalls.master
index 965e1e90ee4..da82270c8ba 100644
--- a/sys/amd64/linux32/syscalls.master
+++ b/sys/amd64/linux32/syscalls.master
@@ -2381,7 +2381,12 @@
 		);
 	}
 409	AUE_NULL	STD {
-		int linux_timer_settime64(void);
+		int linux_timer_settime64(
+		    l_timer_t timerid,
+		    l_int flags,
+		    const struct l_itimerspec64 *new,
+		    struct l_itimerspec64 *old
+		);
 	}
 410	AUE_NULL	STD {
 		int linux_timerfd_gettime64(void);
diff --git a/sys/i386/linux/syscalls.master b/sys/i386/linux/syscalls.master
index 94c9ebfb2ae..4c1c9f1b895 100644
--- a/sys/i386/linux/syscalls.master
+++ b/sys/i386/linux/syscalls.master
@@ -2399,7 +2399,12 @@
 		);
 	}
 409	AUE_NULL	STD {
-		int linux_timer_settime64(void);
+		int linux_timer_settime64(
+		    l_timer_t timerid,
+		    l_int flags,
+		    const struct l_itimerspec64 *new,
+		    struct l_itimerspec64 *old
+		);
 	}
 410	AUE_NULL	STD {
 		int linux_timerfd_gettime64(void);