diff --git a/sys/amd64/amd64/mp_machdep.c b/sys/amd64/amd64/mp_machdep.c
index 14adb396dbd..5e7e5773d13 100644
--- a/sys/amd64/amd64/mp_machdep.c
+++ b/sys/amd64/amd64/mp_machdep.c
@@ -510,7 +510,7 @@ native_start_all_aps(void)
 	outb(CMOS_DATA, mpbiosreason);
 
 	/* number of APs actually started */
-	return mp_naps;
+	return (mp_naps);
 }