diff --git a/src/mega/mega.py b/src/mega/mega.py
index 906b0db..a87bd1e 100644
--- a/src/mega/mega.py
+++ b/src/mega/mega.py
@@ -716,6 +716,7 @@ def _download_file(self,
                 chunk = input_file.read(chunk_size)
                 chunk = aes.decrypt(chunk)
                 temp_output_file.write(chunk)
+                temp_output_file.close()
 
                 encryptor = AES.new(k_str, AES.MODE_CBC, iv_str)
                 for i in range(0, len(chunk) - 16, 16):