From 6cdadc6bdfbb9a781141bd57aee2474f0e4dfa1d Mon Sep 17 00:00:00 2001
From: Danny Murphy <6512845+dltmurphy@users.noreply.github.com>
Date: Tue, 15 Jun 2021 10:43:56 +0100
Subject: [PATCH] Fix Deprecation Issue

---
 src/services/browserPlatformUtils.service.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/services/browserPlatformUtils.service.ts b/src/services/browserPlatformUtils.service.ts
index 28d28f30cb1..d9bd172c855 100644
--- a/src/services/browserPlatformUtils.service.ts
+++ b/src/services/browserPlatformUtils.service.ts
@@ -344,7 +344,7 @@ export default class BrowserPlatformUtilsService implements PlatformUtilsService
     }
 
     onDefaultSystemThemeChange(callback: ((theme: 'light' | 'dark') => unknown)) {
-        this.prefersColorSchemeDark.addListener(({ matches }) => {
+        this.prefersColorSchemeDark.addEventListener('change', ({ matches }) => {
             callback(matches ? 'dark' : 'light');
         });
     }