diff --git a/src/lib/components/radio-group/RadioGroupOption.svelte b/src/lib/components/radio-group/RadioGroupOption.svelte
index f6bad7c..ea3a4fa 100644
--- a/src/lib/components/radio-group/RadioGroupOption.svelte
+++ b/src/lib/components/radio-group/RadioGroupOption.svelte
@@ -69,7 +69,7 @@
   $: slotProps = {
     checked,
     disabled: isDisabled,
-    active: state & OptionState.Active,
+    active: !!(state & OptionState.Active),
   };
 </script>