diff --git a/lib/wsapi/session_context.js b/lib/wsapi/session_context.js
index c62ec790622de67d6681e8700db50db13308f8b5..c3e483c2c206b7a24e782d0fb7c313732c7955a4 100644
--- a/lib/wsapi/session_context.js
+++ b/lib/wsapi/session_context.js
@@ -45,7 +45,8 @@ exports.process = function(req, res) {
       authenticated: authenticated,
       auth_level: auth_level,
       domain_key_creation_time: domainKeyCreationDate.getTime(),
-      random_seed: crypto.randomBytes(32).toString('base64')
+      random_seed: crypto.randomBytes(32).toString('base64'),
+      data_sample_rate: 1.0
     };
     if (config.get('enable_code_version')) {
       respObj.code_version = version();