diff --git a/meshtastic/deviceonly.proto b/meshtastic/deviceonly.proto
index 169df1c..decd244 100644
--- a/meshtastic/deviceonly.proto
+++ b/meshtastic/deviceonly.proto
@@ -54,8 +54,9 @@ message DeviceState {
   /*
    * Used only during development.
    * Indicates developer is testing and changes should never be saved to flash.
+   * Deprecated in 2.3.1
    */
-  bool no_save = 9;
+  bool no_save = 9 [deprecated = true];
 
   /*
    * Some GPS receivers seem to have bogus settings from the factory, so we always do one factory reset.