diff --git a/main.cpp b/main.cpp
index b273a13..264dc69 100644
--- a/main.cpp
+++ b/main.cpp
@@ -304,6 +304,9 @@ extern "C" {
         voip.constant("NET_TYPE_DIALUP", 10);
         voip.constant("NET_TYPE_OTHER_MOBILE", 11);
 
+        voip.constant("DATA_SAVING_NEVER", 0);
+        voip.constant("DATA_SAVING_MOBILE", 1);
+        voip.constant("DATA_SAVING_ALWAYS", 2);
         Php::Namespace danog("danog");
         Php::Namespace MadelineProto("MadelineProto");