diff --git a/module/applications/sheets-configs/activeEffectConfig.mjs b/module/applications/sheets-configs/activeEffectConfig.mjs
index cb9f1701..2d9eafc3 100644
--- a/module/applications/sheets-configs/activeEffectConfig.mjs
+++ b/module/applications/sheets-configs/activeEffectConfig.mjs
@@ -41,7 +41,7 @@ export default class DhActiveEffectConfig extends foundry.applications.sheets.Ac
      * @returns {ChangeChoice { value: string, label: string, hint: string, group: string }[]}
      */
     static getChangeChoices() {
-        const ignoredActorKeys = ['config', 'DhEnvironment', 'DhParty'];
+        const ignoredActorKeys = ['config', 'DhEnvironment', 'DhParty', 'DhNPC'];
 
         const getAllLeaves = (root, group, parentPath = '') => {
             const leaves = [];
diff --git a/module/data/fields/action/effectsField.mjs b/module/data/fields/action/effectsField.mjs
index 0d37f5f9..d2ee1682 100644
--- a/module/data/fields/action/effectsField.mjs
+++ b/module/data/fields/action/effectsField.mjs
@@ -56,7 +56,7 @@ export default class EffectsField extends fields.ArrayField {
             if (!token) return;
 
             const messageToken = token.document ?? token;
-            const conditionImmunities = messageToken.actor.system.rules.conditionImmunities ?? {};
+            const conditionImmunities = messageToken.actor.system.rules?.conditionImmunities ?? {};
             messageTargets.push({
                 token: messageToken,
                 conditionImmunities: Object.values(conditionImmunities).some(x => x)