diff --git a/platform/viewer/src/store/index.js b/platform/viewer/src/store/index.js
index d72b98f58..98b53cb57 100644
--- a/platform/viewer/src/store/index.js
+++ b/platform/viewer/src/store/index.js
@@ -24,7 +24,7 @@ const preloadedState = {
   ...sessionStorage.loadState(),
 };
 
-if (window.disableServersCache === true) {
+if (window.config && window.config.disableServersCache === true) {
   delete preloadedState.servers;
 }