diff --git a/web/src/app.html b/web/src/app.html
index 778375c1e1..ff6a8bf580 100644
--- a/web/src/app.html
+++ b/web/src/app.html
@@ -74,7 +74,7 @@
       if (!theme) {
         theme = { value: 'light', system: true };
       } else if (theme === 'dark' || theme === 'light') {
-        theme = { value: item, system: false };
+        theme = { value: theme, system: false };
         localStorage.setItem(colorThemeKeyName, JSON.stringify(theme));
       } else {
         theme = JSON.parse(theme);