diff --git a/modoboa_installer/scripts/__init__.py b/modoboa_installer/scripts/__init__.py
index 43dab70..c876ffa 100644
--- a/modoboa_installer/scripts/__init__.py
+++ b/modoboa_installer/scripts/__init__.py
@@ -32,7 +32,7 @@ def backup(config):
     except ImportError:
         print("Error importing backup")
     try:
-        getattr(script, "BACKUP"())(config).run()
+        getattr(script, "BACKUP")(config).run()
     except utils.FatalError as inst:
         utils.printcolor(u"{}".format(inst), utils.RED)
         sys.exit(1)