diff --git a/appveyor.yml b/appveyor.yml
index 9f70c3f9..0bd0d088 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -48,7 +48,6 @@ for:
     build_script:
       - pip install psycopg2 mongoengine pymysql  # we should support all database in test environment
       - call install.bat
-      - pip install .
 
   - matrix:
       only: