diff --git a/sys/kern/syscalls.master b/sys/kern/syscalls.master
index af2f4194e2c5..c3e2a0343fde 100644
--- a/sys/kern/syscalls.master
+++ b/sys/kern/syscalls.master
@@ -917,7 +917,7 @@
 		    _In_ _Contains_long_timet_ const struct timeval *tptr
 		);
 	}
-139	AUE_NULL	OBSOL	4.2 sigreturn
+139	AUE_NULL	OBSOL	sigreturn
 140	AUE_ADJTIME	STD {
 		int adjtime(
 		    _In_ _Contains_long_timet_ const struct timeval *delta,