diff --git a/packages/apps-config/src/settings/endpoints.ts b/packages/apps-config/src/settings/endpoints.ts
index 9ed64c3a09..79c6b90c6c 100644
--- a/packages/apps-config/src/settings/endpoints.ts
+++ b/packages/apps-config/src/settings/endpoints.ts
@@ -13,7 +13,7 @@ const DEV: Option[] = [
 ];
 
 const ENV: Option[] = [];
-const WS_URL = process.env.WS_URL || (window as any).process_env.WS_URL;
+const WS_URL = process.env.WS_URL || (window as any).process_env?.WS_URL;
 
 if (WS_URL) {
   ENV.push({