diff --git a/preload.js b/preload.js
index e0c56b2d6..e3f05df0f 100644
--- a/preload.js
+++ b/preload.js
@@ -31,7 +31,7 @@ window.getNodeVersion = () => config.node_version;
 
 window.sessionFeatureFlags = {
   useOnionRequests: true,
-  useCallMessage: true,
+  useCallMessage: false,
 };
 
 window.versionInfo = {