diff --git a/sys/kern/kern_descrip.c b/sys/kern/kern_descrip.c
index 7abdca0..774f647 100644
--- a/sys/kern/kern_descrip.c
+++ b/sys/kern/kern_descrip.c
@@ -760,7 +760,8 @@ kern_fcntl(struct thread *td, int fd, int cmd, intptr_t arg)
 			error = EBADF;
 			break;
 		}
-		if (arg >= 0) {
+		tmp = arg;
+		if (tmp >= 0) {
 			vp = fp->f_vnode;
 			error = vn_lock(vp, LK_SHARED);
 			if (error != 0) {
@@ -769,7 +770,7 @@ kern_fcntl(struct thread *td, int fd, int cmd, intptr_t arg)
 			}
 			bsize = fp->f_vnode->v_mount->mnt_stat.f_iosize;
 			VOP_UNLOCK(vp, 0);
-			fp->f_seqcount = (arg + bsize - 1) / bsize;
+			fp->f_seqcount = (tmp + bsize - 1) / bsize;
 			do {
 				new = old = fp->f_flag;
 				new |= FRDAHEAD;