diff --git a/packages/behavior/src/traits/behaved.js b/packages/behavior/src/traits/behaved.js
index ab5fb69..2a145a2 100644
--- a/packages/behavior/src/traits/behaved.js
+++ b/packages/behavior/src/traits/behaved.js
@@ -184,7 +184,9 @@ export default (latus) => class Behaved extends decorate(Trait) {
 
   updateCurrentRoutine(currentRoutine) {
     this.#currentRoutine = this.#routines[currentRoutine];
-    this.#currentRoutine.reset();
+    if (this.#currentRoutine) {
+      this.#currentRoutine.reset();
+    }
     super.currentRoutine = currentRoutine;
   }