diff --git a/lib/treppe/treppe.h b/lib/treppe/treppe.h
index 38cbf8f..3d88dff 100644
--- a/lib/treppe/treppe.h
+++ b/lib/treppe/treppe.h
@@ -18,6 +18,8 @@ private:
     const uint8_t stufen;
     uint16_t time_per_stair = 300;  // dimmtime per stair [ms]
     uint16_t idle_brightness = 400;
+    uint16_t idle_bright_internal = 0;
+    
     uint16_t active_brightness = 700;
 
     uint16_t ldr_schwelle = 7;      // activation value for FSM [lx]