diff --git a/common/combat/vulnerable.trait.js b/common/combat/vulnerable.trait.js
index 965ae5c..09d17b0 100644
--- a/common/combat/vulnerable.trait.js
+++ b/common/combat/vulnerable.trait.js
@@ -211,24 +211,28 @@ export class Vulnerable extends Trait {
   }
 
   tick(elapsed) {
-    for (let i = 0; i < this.tookDamageActions.length; ++i) {
-      const {context, actions} = this.tookDamageActions[i];
-      actions.tick(context, elapsed);
-    }
-    if (Object.keys(this.damageList).length > 0) {
-      this.state = this.state.set('damageList', I.Map(this.damageList));
-      this.isDirty = true;
-      this.damageList = {};
-    }
-    const keys = Array.from(this.locks.keys());
-    for (let i = 0; i < keys.length; ++i) {
-      const key = keys[i];
-      const remaining = this.locks.get(key) - elapsed;
-      if (remaining <= 0) {
-        this.locks.delete(key);
+    if (AVOCADO_CLIENT) {
+      for (let i = 0; i < this.tookDamageActions.length; ++i) {
+        const {context, actions} = this.tookDamageActions[i];
+        actions.tick(context, elapsed);
       }
-      else {
-        this.locks.set(key, remaining);
+    }
+    if (AVOCADO_SERVER) {
+      if (Object.keys(this.damageList).length > 0) {
+        this.state = this.state.set('damageList', I.Map(this.damageList));
+        this.isDirty = true;
+        this.damageList = {};
+      }
+      const keys = Array.from(this.locks.keys());
+      for (let i = 0; i < keys.length; ++i) {
+        const key = keys[i];
+        const remaining = this.locks.get(key) - elapsed;
+        if (remaining <= 0) {
+          this.locks.delete(key);
+        }
+        else {
+          this.locks.set(key, remaining);
+        }
       }
     }
   }