diff --git a/packages/features/bookings/components/TimeFormatToggle.tsx b/packages/features/bookings/components/TimeFormatToggle.tsx
index 71add8b05b..20b38bec96 100644
--- a/packages/features/bookings/components/TimeFormatToggle.tsx
+++ b/packages/features/bookings/components/TimeFormatToggle.tsx
@@ -12,7 +12,7 @@ export const TimeFormatToggle = () => {
   return (
     <ToggleGroup
       onValueChange={(newFormat) => {
-        if (newFormat !== timeFormat) setTimeFormat(newFormat as TimeFormat);
+        if (newFormat && newFormat !== timeFormat) setTimeFormat(newFormat as TimeFormat);
       }}
       defaultValue={timeFormat}
       value={timeFormat}