diff --git a/backend/Controllers/UploadController.php b/backend/Controllers/UploadController.php
index 523af0f..c65bc5e 100644
--- a/backend/Controllers/UploadController.php
+++ b/backend/Controllers/UploadController.php
@@ -99,7 +99,7 @@ class UploadController
         if ($chunks_size >= $total_size) {
             for ($i = 1; $i <= $total_chunks; ++$i) {
                 $part = $this->tmpfs->readStream($prefix.$file_name.'.part'.$i);
-                $this->tmpfs->write($file_name, $part['stream']);
+                $this->tmpfs->write($file_name, $part['stream'], true);
             }
 
             $final = $this->tmpfs->readStream($file_name);
diff --git a/backend/Services/Tmpfs/Adapters/Tmpfs.php b/backend/Services/Tmpfs/Adapters/Tmpfs.php
index 296666b..adceb0e 100644
--- a/backend/Services/Tmpfs/Adapters/Tmpfs.php
+++ b/backend/Services/Tmpfs/Adapters/Tmpfs.php
@@ -30,11 +30,17 @@ class Tmpfs implements Service, TmpfsInterface
         }
     }
 
-    public function write(string $filename, $data)
+    public function write(string $filename, $data, $append = false)
     {
         $filename = $this->sanitizeFilename($filename);
 
-        file_put_contents($this->getPath().$filename, $data);
+        $flags = 0;
+
+        if ($append) {
+            $flags = FILE_APPEND;
+        }
+
+        file_put_contents($this->getPath().$filename, $data, $flags);
     }
 
     public function getFileLocation(string $filename): string
diff --git a/backend/Services/Tmpfs/TmpfsInterface.php b/backend/Services/Tmpfs/TmpfsInterface.php
index d73a5d2..c021df3 100644
--- a/backend/Services/Tmpfs/TmpfsInterface.php
+++ b/backend/Services/Tmpfs/TmpfsInterface.php
@@ -16,7 +16,7 @@ interface TmpfsInterface
 
     public function findAll($pattern): array;
 
-    public function write(string $filename, $data);
+    public function write(string $filename, $data, $append);
 
     public function read(string $filename): string;
 
diff --git a/tests/backend/Feature/UploadTest.php b/tests/backend/Feature/UploadTest.php
index 9abdca2..36553ed 100644
--- a/tests/backend/Feature/UploadTest.php
+++ b/tests/backend/Feature/UploadTest.php
@@ -137,6 +137,23 @@ class UploadTest extends TestCase
 
         $this->sendRequest('POST', '/upload', $data, $files);
         $this->assertOk();
+
+        $this->sendRequest('POST', '/getdir', [
+            'dir' => '/',
+        ]);
+
+        $this->assertResponseJsonHas([
+            'data' => [
+                'files' => [
+                    0 => [
+                        'type' => 'file',
+                        'name' => 'sample.txt',
+                        'path' => '/sample.txt',
+                        'size' => 1572864,
+                    ],
+                ],
+            ],
+        ]);
     }
 
     public function testUploadFileBiggerThanAllowed()