diff --git a/firmware/timing_control.ino b/firmware/timing_control.ino
index cbec150..d605dc9 100644
--- a/firmware/timing_control.ino
+++ b/firmware/timing_control.ino
@@ -173,6 +173,8 @@ void tc_update_main()
       bri[i] = 0;
       current_bri[i] = 0;
       current_pwm[i] = 0;
+      transitiontime[i] = 4;
+      process_lightdata(i, transitiontime[i]);
     }
 
     return;