diff --git a/API/Routes/Upload/UploadRoute.py b/API/Routes/Upload/UploadRoute.py
index 88dde7d6a..c95f0ec2e 100644
--- a/API/Routes/Upload/UploadRoute.py
+++ b/API/Routes/Upload/UploadRoute.py
@@ -181,7 +181,7 @@ def updateTimeslices_OnlyTs(casename):
     RYCTsPath.write_text(RYCTsPath.read_text().replace('Timeslice', 'TsId'))
 ##############################################################Multithreading example#########################3
 class Download(Thread):
-    def __init__(self, request, zippedFile):
+    def __init__(self, request, zippedFile=None):
         Thread.__init__(self)
         self.request = request
         self.zippedFile = zippedFile
@@ -191,8 +191,9 @@ def run(self):
         time.sleep(20)
         #print(self.request)
         #remove zipped file
-        os.remove(self.zippedFile)
-        print("Deletion of zip archive done!")
+        if self.zippedFile is not None and Path(self.zippedFile).exists():
+            os.remove(self.zippedFile)
+            print("Deletion of zip archive done!")
 
 
 @upload_api.route('/myfunc', methods=["GET", "POST"])