diff --git a/main.py b/main.py
index a4fd035..8f6229e 100644
--- a/main.py
+++ b/main.py
@@ -40,7 +40,7 @@ class SeafileUploader():
         drop.clear()
         drop.setEnabled(False)
         select = 0
-        if self.isConfigured():
+        if self.seaf_client:
             self.libs = (self.seaf_client or self.seaf_lib.client).libraries()
             i=0
             for lib in self.libs:
@@ -83,8 +83,9 @@ class SeafileUploader():
         self.upload_scheme = settings.value("upload-scheme", "regular")
         settings.endGroup()
         settings.endGroup()
-        if self.isConfigured():
+        if self.seaf_url and self.access_token:
             self.seaf_client = SeafileClient(self.seaf_url,self.access_token.username,token=self.access_token)
+        if self.isConfigured():
             for lib in self.seaf_client.libraries():
                 if lib.id == self.lib_id:
                     self.seaf_lib = lib