diff --git a/src/rules/classic.less b/src/rules/classic.less
index 2e7f558..be64a53 100644
--- a/src/rules/classic.less
+++ b/src/rules/classic.less
@@ -35,7 +35,7 @@
 
         // Do not give the same effects to nested panels
         @{panel} {
-            background-color: .hsl-group(foreground; 0.075)[@c];
+            background-color: .hsl-group(current; 0.075)[@c];
             backdrop-filter: none;
             box-shadow: none;
         }