diff --git a/src/components/cases/documents-tab.tsx b/src/components/cases/documents-tab.tsx
index c17aed4..5cbbe3c 100644
--- a/src/components/cases/documents-tab.tsx
+++ b/src/components/cases/documents-tab.tsx
@@ -389,8 +389,9 @@ export function CaseDocumentsTab({ caseId }: { caseId: string }) {
     );
   })();
 
-  const performMove = async () => {
-    const dest = moveDest; // "" = root
+  const performMove = async (destArg?: string) => {
+    const raw = destArg ?? moveDest;
+    const dest = raw === "__root__" ? "" : raw; // "" = root
     // Move folders
     for (const full of selectedFolders) {
       const name = full.split("/").pop() || full;
@@ -648,11 +649,7 @@ export function CaseDocumentsTab({ caseId }: { caseId: string }) {
             <div className="flex justify-end gap-2 pt-2">
               <Button variant="ghost" onClick={() => setMoveOpen(false)}>Cancel</Button>
               <Button
-                onClick={() => {
-                  // SelectItem cannot have empty value; map sentinel back to ""
-                  if (moveDest === "__root__") setMoveDest("");
-                  performMove();
-                }}
+                onClick={() => performMove(moveDest)}
                 disabled={!moveDest}
               >
                 Move