diff --git a/lights.js b/lights.js
index beef6f0..f81f4d4 100644
--- a/lights.js
+++ b/lights.js
@@ -71,6 +71,7 @@ function tick_pattern() {
 
       log.debug(`next: ${targets["r"]}, ${targets["g"]}, ${targets["b"]}`);
       next_pattern[i] = rgb_to_int(targets["r"] || 0, targets["g"] || 0, targets["b"] || 0);
+      targets["r"] = 0; targets["g"] = 0; targets["b"] = 0;
     }
   }
   else {