diff --git a/drivers/staging/rdma/hfi1/diag.c b/drivers/staging/rdma/hfi1/diag.c
index 0c88317..e41159f 100644
--- a/drivers/staging/rdma/hfi1/diag.c
+++ b/drivers/staging/rdma/hfi1/diag.c
@@ -257,7 +257,7 @@
 static int hfi1_filter_ib_pkey(void *ibhdr, void *packet_data, void *value);
 static int hfi1_filter_direction(void *ibhdr, void *packet_data, void *value);
 
-static struct hfi1_filter_array hfi1_filters[] = {
+static const struct hfi1_filter_array hfi1_filters[] = {
 	{ hfi1_filter_lid },
 	{ hfi1_filter_dlid },
 	{ hfi1_filter_mad_mgmt_class },