diff --git a/firmware/timing_control.ino b/firmware/timing_control.ino
index 64ace7c..41dce4c 100644
--- a/firmware/timing_control.ino
+++ b/firmware/timing_control.ino
@@ -165,6 +165,16 @@ void tc_update_main()
   {
     // no new predecessor or successor found, start over
     current_target_data_block = 255;
+
+    // disable the lights
+    for (uint8_t i = 0; i < LIGHTS_COUNT; i++)
+    {
+      light_state[i] = false;
+      bri[i] = 0;
+      current_bri[i] = 0;
+      current_pwm[i] = 0;
+    }
+
     return;
   }