diff --git a/src/components/ha-service-control.ts b/src/components/ha-service-control.ts
index bc0cc718c1..21e5289e5f 100644
--- a/src/components/ha-service-control.ts
+++ b/src/components/ha-service-control.ts
@@ -249,12 +249,16 @@ export class HaServiceControl extends LitElement {
   ) {
     const targetSelector = target ? { target } : { target: {} };
     const targetEntities =
-      ensureArray(value?.target?.entity_id || value?.data?.entity_id) || [];
+      ensureArray(
+        value?.target?.entity_id || value?.data?.entity_id
+      )?.slice() || [];
     const targetDevices =
-      ensureArray(value?.target?.device_id || value?.data?.device_id) || [];
+      ensureArray(
+        value?.target?.device_id || value?.data?.device_id
+      )?.slice() || [];
     const targetAreas = ensureArray(
       value?.target?.area_id || value?.data?.area_id
-    );
+    )?.slice();
     if (targetAreas) {
       targetAreas.forEach((areaId) => {
         const expanded = expandAreaTarget(