diff --git a/src/popup/scss/misc.scss b/src/popup/scss/misc.scss
index 54582b3aa4..59613dcbcd 100644
--- a/src/popup/scss/misc.scss
+++ b/src/popup/scss/misc.scss
@@ -341,6 +341,8 @@ input[type="password"]::-ms-reveal {
 
 // Workaround for rendering error in Firefox sidebar
 // option elements will not render background-color correctly if identical to parent background-color
-html.theme_dark select option, html.theme_nord select option {
-    background-color: adjust-color(map-get(map-get($themes, dark), inputBackgroundColor), +1);
+select option {
+    @include themify($themes) {
+        background-color: adjust-color(themed('inputBackgroundColor'), +1);
+    }
 }