diff --git a/src/app/helpers/validators/map.ts b/src/app/helpers/validators/map.ts
index ad75040..51c7abf 100644
--- a/src/app/helpers/validators/map.ts
+++ b/src/app/helpers/validators/map.ts
@@ -149,6 +149,8 @@ export function checkMapSpawners(mod: IModKit): ValidationMessageGroup[] {
 
   mod.maps.forEach((map) => {
     map.map.layers[10].objects.forEach((spawner: any) => {
+      if (!spawner.properties) return;
+
       addModSpawnerCount(spawner.properties.tag as string);
       addUsedSpawnerCount(spawner.properties.tag as string);
 
diff --git a/src/app/helpers/validators/npc.ts b/src/app/helpers/validators/npc.ts
index 37528b8..2310e24 100644
--- a/src/app/helpers/validators/npc.ts
+++ b/src/app/helpers/validators/npc.ts
@@ -42,7 +42,7 @@ export function checkNPCUsages(mod: IModKit) {
 
   mod.maps.forEach((map) => {
     map.map.layers[10].objects.forEach((spawner: any) => {
-      if (spawner.properties.lairName) {
+      if (spawner.properties?.lairName) {
         addItemCount(spawner.properties.lairName as string);
       }
     });