diff --git a/src/forms/CalendarForm/validation/validateExceptions.tsx b/src/forms/CalendarForm/validation/validateExceptions.tsx
index fa0e0b15..7a1e50f1 100644
--- a/src/forms/CalendarForm/validation/validateExceptions.tsx
+++ b/src/forms/CalendarForm/validation/validateExceptions.tsx
@@ -248,12 +248,12 @@ export function validateExceptionInterOverlaps(
   const rowMinMaxes: { i: number; startDate: Dayjs; endDate: Dayjs }[] =
     rows.map((row) => ({
       i: row.i,
-      startDate: dayjs?.min(
-        row.rows.map(({ startDate }) => dayjs(startDate)))
-        .startOf('day'),
-      endDate: dayjs?.max(
-        row.rows.map(({ endDate }) => dayjs(endDate)))
-        .endOf('day')
+      startDate: dayjs
+        .min(row.rows.map(({ startDate }) => dayjs(startDate)))
+        ?.startOf('day'),
+      endDate: dayjs
+        .maxrow.rows.map(({ endDate }) => dayjs(endDate)))
+        ?.endOf('day')
     }));
 
   for (let i = 0; i < rowMinMaxes.length - 1; i++) {