diff --git a/drivers/nvme/host/pci.c b/drivers/nvme/host/pci.c
index d668682f91dfdb3428e02a44df2c8ade9ccf0042..b0e2634545466f4bf2aa7f0ec144002e799288d0 100644
--- a/drivers/nvme/host/pci.c
+++ b/drivers/nvme/host/pci.c
@@ -908,9 +908,11 @@ static void nvme_complete_cqes(struct nvme_queue *nvmeq, u16 start, u16 end)
 
 static inline void nvme_update_cq_head(struct nvme_queue *nvmeq)
 {
-	if (++nvmeq->cq_head == nvmeq->q_depth) {
+	if (nvmeq->cq_head == nvmeq->q_depth - 1) {
 		nvmeq->cq_head = 0;
 		nvmeq->cq_phase = !nvmeq->cq_phase;
+	} else {
+		++nvmeq->cq_head;
 	}
 }