diff --git a/ospfd/ospf_vty.c b/ospfd/ospf_vty.c
index f22c1e7e4..0b0b9d81e 100644
--- a/ospfd/ospf_vty.c
+++ b/ospfd/ospf_vty.c
@@ -7314,16 +7314,26 @@ static int show_ip_ospf_database_type_adv_router_common(struct vty *vty,
 		type = OSPF_OPAQUE_AREA_LSA;
 	else if (strncmp(argv[arg_base + idx_type]->text, "opaque-as", 9) == 0)
 		type = OSPF_OPAQUE_AS_LSA;
-	else
+	else {
+		if (uj) {
+			if (use_vrf)
+				json_object_free(json_vrf);
+		}
 		return CMD_WARNING;
+	}
 
 	/* `show ip ospf database LSA adv-router ADV_ROUTER'. */
 	if (strncmp(argv[arg_base + 5]->text, "s", 1) == 0)
 		adv_router = ospf->router_id;
 	else {
 		ret = inet_aton(argv[arg_base + 6]->arg, &adv_router);
-		if (!ret)
+		if (!ret) {
+			if (uj) {
+				if (use_vrf)
+					json_object_free(json_vrf);
+			}
 			return CMD_WARNING;
+		}
 	}
 
 	show_lsa_detail_adv_router(vty, ospf, type, &adv_router, json_vrf);
@@ -7387,9 +7397,12 @@ DEFUN (show_ip_ospf_database_type_adv_router,
 		} else {
 			ospf = ospf_lookup_by_inst_name(inst, vrf_name);
 			if ((ospf == NULL) || !ospf->oi_running) {
-				vty_out(vty,
-					"%% OSPF is not enabled in vrf %s\n",
-					vrf_name);
+				if (uj)
+					vty_json(vty, json);
+				else
+					vty_out(vty,
+						"%% OSPF is not enabled in vrf %s\n",
+						vrf_name);
 				return CMD_SUCCESS;
 			}
 
@@ -7400,7 +7413,11 @@ DEFUN (show_ip_ospf_database_type_adv_router,
 		/* Display default ospf (instance 0) info */
 		ospf = ospf_lookup_by_vrf_id(VRF_DEFAULT);
 		if (ospf == NULL || !ospf->oi_running) {
-			vty_out(vty, "%% OSPF is not enabled on vrf default\n");
+			if (uj)
+				vty_json(vty, json);
+			else
+				vty_out(vty,
+					"%% OSPF is not enabled on vrf default\n");
 			return CMD_SUCCESS;
 		}
 
@@ -11274,7 +11291,12 @@ static int show_ip_ospf_route_common(struct vty *vty, struct ospf *ospf,
 	ospf_show_vrf_name(ospf, vty, json_vrf, use_vrf);
 
 	if (ospf->new_table == NULL) {
-		vty_out(vty, "No OSPF routing information exist\n");
+		if (json) {
+			if (use_vrf)
+				json_object_free(json_vrf);
+		} else {
+			vty_out(vty, "No OSPF routing information exist\n");
+		}
 		return CMD_SUCCESS;
 	}