diff --git a/site/static/docs/5.3/assets/js/color-modes.js b/site/static/docs/5.3/assets/js/color-modes.js
index 32cbaa1746..9f22daa1b2 100644
--- a/site/static/docs/5.3/assets/js/color-modes.js
+++ b/site/static/docs/5.3/assets/js/color-modes.js
@@ -59,7 +59,7 @@
 
   window.matchMedia('(prefers-color-scheme: dark)').addEventListener('change', () => {
     const storedTheme = getStoredTheme()
-    if (storedTheme !== 'light' || storedTheme !== 'dark') {
+    if (storedTheme !== 'light' && storedTheme !== 'dark') {
       setTheme(getPreferredTheme())
     }
   })