diff --git a/sys/ofed/drivers/net/mlx4/en_rx.c b/sys/ofed/drivers/net/mlx4/en_rx.c
index 21282c69c0c..7c5b759e547 100644
--- a/sys/ofed/drivers/net/mlx4/en_rx.c
+++ b/sys/ofed/drivers/net/mlx4/en_rx.c
@@ -96,8 +96,6 @@ mlx4_en_alloc_buf(struct mlx4_en_rx_ring *ring,
 			m_freem(mb);
 			return (err);
 		}
-		KASSERT(nsegs == 1,
-		    ("Number of segments is expected to be one"));
 
 		/* store spare info */
 		ring->spare.mbuf = mb;
@@ -127,7 +125,6 @@ mlx4_en_alloc_buf(struct mlx4_en_rx_ring *ring,
 		m_freem(mb);
 		goto use_spare;
 	}
-	KASSERT(nsegs == 1, ("Number of segments is expected to be one"));
 
 	*pdma = cpu_to_be64(segs[0].ds_addr);
 	mb_list->mbuf = mb;
diff --git a/sys/ofed/include/linux/mlx4/doorbell.h b/sys/ofed/include/linux/mlx4/doorbell.h
index f31bba270aa..6724e5ea296 100644
--- a/sys/ofed/include/linux/mlx4/doorbell.h
+++ b/sys/ofed/include/linux/mlx4/doorbell.h
@@ -77,7 +77,7 @@ static inline void mlx4_write64(__be32 val[2], void __iomem *dest,
 
 	spin_lock_irqsave(doorbell_lock, flags);
 	__raw_writel((__force u32) val[0], dest);
-	__raw_writel((__force u32) val[1], dest + 4);
+	__raw_writel((__force u32) val[1], (u8 *)dest + 4);
 	spin_unlock_irqrestore(doorbell_lock, flags);
 }