diff --git a/src/schemas/organisationSchema.ts b/src/schemas/organisationSchema.ts
index 2d7b817..bfbbad7 100644
--- a/src/schemas/organisationSchema.ts
+++ b/src/schemas/organisationSchema.ts
@@ -48,13 +48,13 @@ export const AddressSchema = z.object({
   Location: z.preprocess(preprocessJSON, LocationCoordinatesSchema.optional()),
   OpeningTimes: z.preprocess(preprocessJSON, z.array(OpeningTimeSchema).default([])),
 }).refine((data) => {
-  // If not open 24/7, must have at least one opening time
-  if (!data.IsOpen247) {
+  // If not open 24/7 and not appointment only, must have at least one opening time
+  if (!data.IsOpen247 && !data.IsAppointmentOnly) {
     return data.OpeningTimes.length > 0;
   }
   return true;
 }, {
-  message: 'At least one opening time is required when location is not open 24/7',
+  message: 'At least one opening time is required when location is not open 24/7 and not appointment only',
   path: ['OpeningTimes']
 });