diff --git a/packages/synapse-react-client/src/utils/AppUtils/AppUtils.ts b/packages/synapse-react-client/src/utils/AppUtils/AppUtils.ts
index 7ade44e4a3..f0be9a0e7f 100644
--- a/packages/synapse-react-client/src/utils/AppUtils/AppUtils.ts
+++ b/packages/synapse-react-client/src/utils/AppUtils/AppUtils.ts
@@ -18,7 +18,7 @@ export const getCookieDomain = () => {
   if (window.location.hostname.toLowerCase().endsWith('.synapse.org')) {
     return '.synapse.org'
   }
-  if (window.location.hostname.toLowerCase().endsWith('dev.sagebase.org')) {
+  if (window.location.hostname.toLowerCase().endsWith('.dev.sagebase.org')) {
     return '.dev.sagebase.org'
   }
   return undefined