diff --git a/res/values-sr/strings.xml b/res/values-sr/strings.xml
index 3d04cd0..364c738 100644
--- a/res/values-sr/strings.xml
+++ b/res/values-sr/strings.xml
@@ -26,6 +26,11 @@
  */
 -->
 <resources>
+
+    <!-- Translation version, reference for translators -->
+    <string name="translation_version">5</string>
+
+    <!-- In Serbian language there's a rule to transliterate app names -->
     <string name="app_name">Оунклауд-СМС</string>
 
     <!-- Translations must begin there -->