diff --git a/modoboa_installer/scripts/base.py b/modoboa_installer/scripts/base.py
index f95987c..c15cc91 100644
--- a/modoboa_installer/scripts/base.py
+++ b/modoboa_installer/scripts/base.py
@@ -48,7 +48,7 @@ class Installer(object):
         # Check if modoboa version > 2.2
         modoboa_version = python.get_package_version(
             "modoboa",
-            self.self.config.get("modoboa", "venv_path"),
+            self.config.get("modoboa", "venv_path"),
             sudo_user=self.config.get("modoboa", "user")
             )
         condition = (