diff --git a/rsconcept/frontend/src/features/oss/dialogs/DlgCreateOperation/TabInputOperation.tsx b/rsconcept/frontend/src/features/oss/dialogs/DlgCreateOperation/TabInputOperation.tsx
index ea0c5c83..deec9d41 100644
--- a/rsconcept/frontend/src/features/oss/dialogs/DlgCreateOperation/TabInputOperation.tsx
+++ b/rsconcept/frontend/src/features/oss/dialogs/DlgCreateOperation/TabInputOperation.tsx
@@ -103,7 +103,7 @@ function TabInputOperation({
       {!createSchema ? (
         <PickSchema
           items={sortedItems}
-          value={attachedID}
+          value={attachedID ?? null}
           itemType={LibraryItemType.RSFORM}
           onChange={onChangeAttachedID}
           rows={8}
diff --git a/rsconcept/frontend/src/features/rsform/dialogs/DlgInlineSynthesis/TabSource.tsx b/rsconcept/frontend/src/features/rsform/dialogs/DlgInlineSynthesis/TabSource.tsx
index 7c692fe1..387f83d9 100644
--- a/rsconcept/frontend/src/features/rsform/dialogs/DlgInlineSynthesis/TabSource.tsx
+++ b/rsconcept/frontend/src/features/rsform/dialogs/DlgInlineSynthesis/TabSource.tsx
@@ -25,7 +25,7 @@ function TabSource({ selected, receiver, setSelected }: TabSourceProps) {
         items={sortedItems}
         itemType={LibraryItemType.RSFORM}
         rows={14}
-        value={selected}
+        value={selected ?? null}
         onChange={setSelected}
       />
       <div className='flex items-center gap-6 '>