diff --git a/drivers/infiniband/hw/mlx4/main.c b/drivers/infiniband/hw/mlx4/main.c
index 85c47a0e524c..3e0d10d67693 100644
--- a/drivers/infiniband/hw/mlx4/main.c
+++ b/drivers/infiniband/hw/mlx4/main.c
@@ -212,6 +212,7 @@ static int mlx4_ib_query_device(struct ib_device *ibdev,
 	props->max_total_mcast_qp_attach = props->max_mcast_qp_attach *
 					   props->max_mcast_grp;
 	props->max_map_per_fmr = dev->dev->caps.max_fmr_maps;
+	props->max_ah = INT_MAX;
 
 out:
 	kfree(in_mad);