diff --git a/polymer/eduke32/source/game.h b/polymer/eduke32/source/game.h
index db7d8a9cf..682f0aa2f 100644
--- a/polymer/eduke32/source/game.h
+++ b/polymer/eduke32/source/game.h
@@ -131,6 +131,7 @@ extern camera_t g_camera;
 # define CAMERACLOCK g_cameraClock
 #endif
 
+// KEEPINSYNC lunatic/defs.ilua
 typedef struct {
 #if !defined LUNATIC
     vec3_t camerapos;
diff --git a/polymer/eduke32/source/lunatic/defs.ilua b/polymer/eduke32/source/lunatic/defs.ilua
index 4354312ea..77f6d8b4a 100644
--- a/polymer/eduke32/source/lunatic/defs.ilua
+++ b/polymer/eduke32/source/lunatic/defs.ilua
@@ -525,6 +525,7 @@ typedef struct {
         //
         int32_t FXDevice;
         int32_t MusicDevice;
+        int32_t MasterVolume;
         int32_t FXVolume;
         int32_t MusicVolume;
         int32_t SoundToggle;