diff --git a/modoboa_installer/database.py b/modoboa_installer/database.py
index f9e20cb..eddc7b3 100644
--- a/modoboa_installer/database.py
+++ b/modoboa_installer/database.py
@@ -103,7 +103,7 @@ class MySQL(Database):
 
     """MySQL backend."""
 
-    package = ["mysql-server", "libmysqlclient-dev"]
+    packages = ["mysql-server", "libmysqlclient-dev"]
     service = "mysql"
 
     def install_package(self):