diff --git a/packages/twenty-front/src/modules/activities/timelineActivities/rows/main-object/components/EventFieldDiffValueEffect.tsx b/packages/twenty-front/src/modules/activities/timelineActivities/rows/main-object/components/EventFieldDiffValueEffect.tsx
index f07a2fc7361c..6e20cfc4faa8 100644
--- a/packages/twenty-front/src/modules/activities/timelineActivities/rows/main-object/components/EventFieldDiffValueEffect.tsx
+++ b/packages/twenty-front/src/modules/activities/timelineActivities/rows/main-object/components/EventFieldDiffValueEffect.tsx
@@ -5,6 +5,7 @@ import { FieldMetadataItem } from '@/object-metadata/types/FieldMetadataItem';
 import { ObjectMetadataItem } from '@/object-metadata/types/ObjectMetadataItem';
 import { useSetRecordValue } from '@/object-record/record-store/contexts/RecordFieldValueSelectorContext';
 import { recordStoreFamilyState } from '@/object-record/record-store/states/recordStoreFamilyState';
+import { isDefined } from 'twenty-ui';
 
 export const EventFieldDiffValueEffect = ({
   diffArtificialRecordStoreId,
@@ -23,7 +24,7 @@ export const EventFieldDiffValueEffect = ({
   const setRecordValue = useSetRecordValue();
 
   useEffect(() => {
-    if (!diffRecord) return;
+    if (!isDefined(diffRecord)) return;
 
     const forgedObjectRecord = {
       __typename: mainObjectMetadataItem.nameSingular,