diff --git a/src/Http/Controllers/SignedStorageUrlController.php b/src/Http/Controllers/SignedStorageUrlController.php
index 5143de7..0a3c7ad 100644
--- a/src/Http/Controllers/SignedStorageUrlController.php
+++ b/src/Http/Controllers/SignedStorageUrlController.php
@@ -31,22 +31,29 @@ public function store(Request $request)
 
         $uuid = (string) Str::uuid();
 
+        $key = $request->input('key') ?: 'tmp/'.$uuid;
+
         $expiresAfter = config('vapor.signed_storage_url_expires_after', 5);
 
         $signedRequest = $client->createPresignedRequest(
-            $this->createCommand($request, $client, $bucket, $key = ('tmp/'.$uuid)),
+            $this->createCommand($request, $client, $bucket, $key),
             sprintf('+%s minutes', $expiresAfter)
         );
 
         $uri = $signedRequest->getUri();
 
-        return response()->json([
-            'uuid' => $uuid,
+        $response = [
             'bucket' => $bucket,
             'key' => $key,
             'url' => $uri->getScheme().'://'.$uri->getAuthority().$uri->getPath().'?'.$uri->getQuery(),
             'headers' => $this->headers($request, $signedRequest),
-        ], 201);
+        ];
+
+        if (! $request->has('key')) {
+            $response['uuid'] = $uuid;
+        }
+
+        return response()->json($response, 201);
     }
 
     /**