diff --git a/package.json b/package.json
index 8538d95..00be8ee 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@xsolla/pay-station-sdk",
-  "version": "0.0.23",
+  "version": "0.0.24",
   "description": "Pay Station SDK",
   "main": "dist/main.js",
   "types": "dist/index.d.ts",
diff --git a/src/core/form/form-loader.ts b/src/core/form/form-loader.ts
index 71ee312..47af2bb 100644
--- a/src/core/form/form-loader.ts
+++ b/src/core/form/form-loader.ts
@@ -37,6 +37,10 @@ export class FormLoader {
   }
 
   public setFieldLoaded(name: string): void {
+    if (!this._fields) {
+      return;
+    }
+
     if (name in this._fields) {
       this._fields[name] = true;
     }