diff --git a/seafile.install b/seafile.install
index 830a1d5..08acd74 100755
--- a/seafile.install
+++ b/seafile.install
@@ -1,6 +1,6 @@
 ## arg 1:  the new package version
 pre_install() {
-	virtualenv2 --system-site-packages /usr/lib/seafile/seafileenv
+	virtualenv2 --no-site-packages /usr/lib/seafile/seafileenv
 	virtualenv2 --relocatable /usr/lib/seafile/seafileenv
 	source /usr/lib/seafile/seafileenv/bin/activate
 	pip install django==1.3.1