diff --git a/themes/patek/assets/js/dark-mode.js b/themes/patek/assets/js/dark-mode.js
index a5217a4..7cc5468 100644
--- a/themes/patek/assets/js/dark-mode.js
+++ b/themes/patek/assets/js/dark-mode.js
@@ -3,7 +3,7 @@ function restoreDarkmode() {
 	const elem = document.getElementById("content");
 
 	if (!document.cookie.includes("dark-mode=")) {
-		if (prefersDarkMode.matches) {
+		if (elem && prefersDarkMode.matches) {
 			elem.classList.add("dark-mode");
 		}
 	}