diff --git a/fs/nfs/nfs4state.c b/fs/nfs/nfs4state.c
index 4e37818a34ef79f83f93bc0852856c64e816fa17..c1111a37dc1447646aba98ef352aa77c8af33a29 100644
--- a/fs/nfs/nfs4state.c
+++ b/fs/nfs/nfs4state.c
@@ -212,7 +212,7 @@ static void nfs4_end_drain_session(struct nfs_client *clp)
 static int nfs4_wait_on_slot_tbl(struct nfs4_slot_table *tbl)
 {
 	spin_lock(&tbl->slot_tbl_lock);
-	if (tbl->highest_used_slotid != -1) {
+	if (tbl->highest_used_slotid != NFS4_NO_SLOT) {
 		INIT_COMPLETION(tbl->complete);
 		spin_unlock(&tbl->slot_tbl_lock);
 		return wait_for_completion_interruptible(&tbl->complete);