diff --git a/ospf6d/ospf6_top.c b/ospf6d/ospf6_top.c
index 4c40298799..216837d8a5 100644
--- a/ospf6d/ospf6_top.c
+++ b/ospf6d/ospf6_top.c
@@ -2015,7 +2015,7 @@ ospf6_show_summary_address(struct vty *vty, struct ospf6 *ospf6,
 
 	if (!uj) {
 		ospf6_show_vrf_name(vty, ospf6, json_vrf);
-		vty_out(vty, "aggregation delay interval :%u(in seconds)\n\n",
+		vty_out(vty, "aggregation delay interval: %u(in seconds)\n\n",
 			ospf6->aggr_delay_interval);
 		vty_out(vty, "%s\n", header);
 	} else {
diff --git a/ospfd/ospf_vty.c b/ospfd/ospf_vty.c
index 8c3ad7f372..4f62e4f87f 100644
--- a/ospfd/ospf_vty.c
+++ b/ospfd/ospf_vty.c
@@ -11994,7 +11994,7 @@ static int ospf_show_summary_address(struct vty *vty, struct ospf *ospf,
 	ospf_show_vrf_name(ospf, vty, json_vrf, use_vrf);
 
 	if (!uj) {
-		vty_out(vty, "aggregation delay interval :%u(in seconds)\n\n",
+		vty_out(vty, "aggregation delay interval: %u(in seconds)\n\n",
 			ospf->aggr_delay_interval);
 	} else {
 		json_object_int_add(json_vrf, "aggregationDelayInterval",