diff --git a/packages/apidash_design_system/lib/widgets/checkbox.dart b/packages/apidash_design_system/lib/widgets/checkbox.dart
index 1707b051..eca9f257 100644
--- a/packages/apidash_design_system/lib/widgets/checkbox.dart
+++ b/packages/apidash_design_system/lib/widgets/checkbox.dart
@@ -34,7 +34,7 @@ class ADCheckBox extends StatelessWidget {
             if (states.contains(WidgetState.selected)) {
               return colorScheme.primary;
             }
-            return null;
+            return colorScheme.surfaceContainerLowest;
           },
         ));
   }