diff --git a/isisd/isis_affinitymap.c b/isisd/isis_affinitymap.c
index e681e820be..41bad0a7d9 100644
--- a/isisd/isis_affinitymap.c
+++ b/isisd/isis_affinitymap.c
@@ -20,6 +20,9 @@ static bool isis_affinity_map_check_use(const char *affmap_name)
 	struct affinity_map *map;
 	uint16_t pos;
 
+	if (!isis)
+		return false;
+
 	map = affinity_map_get(affmap_name);
 	pos = map->bit_position;
 
@@ -46,6 +49,9 @@ static void isis_affinity_map_update(const char *affmap_name, uint16_t old_pos,
 	struct flex_algo *fa;
 	bool changed;
 
+	if (!isis)
+		return;
+
 	for (ALL_LIST_ELEMENTS_RO(isis->area_list, area_node, area)) {
 		changed = false;
 		for (ALL_LIST_ELEMENTS_RO(area->flex_algos->flex_algos, fa_node,
diff --git a/isisd/isis_flex_algo.c b/isisd/isis_flex_algo.c
index 742a862fcd..0efc519eab 100644
--- a/isisd/isis_flex_algo.c
+++ b/isisd/isis_flex_algo.c
@@ -243,8 +243,6 @@ bool isis_flex_algo_constraint_drop(struct isis_spftree *spftree,
 {
 	bool ret;
 	struct isis_ext_subtlvs *subtlvs = reach->subtlvs;
-	uint8_t lspid_orig[ISIS_SYS_ID_LEN + 2];
-	uint8_t lspid_neigh[ISIS_SYS_ID_LEN + 2];
 	struct isis_router_cap_fad *fad;
 	struct isis_asla_subtlvs *asla;
 	struct listnode *node;
@@ -286,15 +284,11 @@ bool isis_flex_algo_constraint_drop(struct isis_spftree *spftree,
 	if (link_admin_group && link_ext_admin_group) {
 		link_ext_admin_group_bitmap0 =
 			admin_group_get_offset(link_ext_admin_group, 0);
-		if (*link_admin_group != link_ext_admin_group_bitmap0) {
-			memcpy(lspid_orig, lsp->hdr.lsp_id,
-			       ISIS_SYS_ID_LEN + 2);
-			memcpy(lspid_neigh, reach->id, ISIS_SYS_ID_LEN + 2);
+		if (*link_admin_group != link_ext_admin_group_bitmap0)
 			zlog_warn(
-				"ISIS-SPF: LSP from %pLS neighbor %pLS. Admin-group 0x%08x differs from ext admin-group 0x%08x.",
-				lspid_orig, lspid_neigh, *link_admin_group,
+				"ISIS-SPF: LSP from %pPN neighbor %pPN. Admin-group 0x%08x differs from ext admin-group 0x%08x.",
+				lsp->hdr.lsp_id, reach->id, *link_admin_group,
 				link_ext_admin_group_bitmap0);
-		}
 	}
 
 	/*
diff --git a/isisd/isis_spf.c b/isisd/isis_spf.c
index 732853796a..466e96b3a2 100644
--- a/isisd/isis_spf.c
+++ b/isisd/isis_spf.c
@@ -2884,7 +2884,8 @@ static void show_isis_route_common(struct vty *vty, int levels,
 					spftree = area->spftree[SPFTREE_IPV4]
 							       [level - 1];
 
-				isis_print_spftree(vty, spftree);
+				if (!json)
+					isis_print_spftree(vty, spftree);
 
 				isis_print_routes(vty, spftree,
 						  json ? &json_val : NULL,
@@ -2905,7 +2906,8 @@ static void show_isis_route_common(struct vty *vty, int levels,
 					spftree = area->spftree[SPFTREE_IPV6]
 							       [level - 1];
 
-				isis_print_spftree(vty, spftree);
+				if (!json)
+					isis_print_spftree(vty, spftree);
 
 				isis_print_routes(vty, spftree,
 						  json ? &json_val : NULL,
@@ -2927,7 +2929,8 @@ static void show_isis_route_common(struct vty *vty, int levels,
 					spftree = area->spftree[SPFTREE_DSTSRC]
 							       [level - 1];
 
-				isis_print_spftree(vty, spftree);
+				if (!json)
+					isis_print_spftree(vty, spftree);
 				isis_print_routes(vty, spftree,
 						  json ? &json_val : NULL,
 						  prefix_sid, backup);
diff --git a/isisd/isisd.c b/isisd/isisd.c
index f65d21405b..4b01a18ecd 100644
--- a/isisd/isisd.c
+++ b/isisd/isisd.c
@@ -3144,7 +3144,7 @@ static void area_resign_level(struct isis_area *area, int level)
 		for (ALL_LIST_ELEMENTS_RO(area->flex_algos->flex_algos, node,
 					  fa)) {
 			data = fa->data;
-			if (data->spftree[level - 1]) {
+			if (data->spftree[tree][level - 1]) {
 				isis_spftree_del(
 					data->spftree[tree][level - 1]);
 				data->spftree[tree][level - 1] = NULL;