From ce3b8544b985c9185cf7679f135943e9434e5a7c Mon Sep 17 00:00:00 2001
From: Bram Kragten <mail@bramkragten.nl>
Date: Thu, 10 Feb 2022 00:15:00 +0100
Subject: [PATCH] Fix service control for older browsers (#11629)

---
 src/components/ha-service-control.ts | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/components/ha-service-control.ts b/src/components/ha-service-control.ts
index 5b9a8a6506..9cac6ae6b9 100644
--- a/src/components/ha-service-control.ts
+++ b/src/components/ha-service-control.ts
@@ -135,7 +135,9 @@ export class HaServiceControl extends LitElement {
       let updatedDefaultValue = false;
       if (this._value && serviceData) {
         // Set mandatory bools without a default value to false
-        this._value.data ??= {};
+        if (!this._value.data) {
+          this._value.data = {};
+        }
         serviceData.fields.forEach((field) => {
           if (
             field.selector &&