diff --git a/dom0/qvm-tools/qvm-prefs b/dom0/qvm-tools/qvm-prefs
index 5692bb07..719ff26e 100755
--- a/dom0/qvm-tools/qvm-prefs
+++ b/dom0/qvm-tools/qvm-prefs
@@ -335,6 +335,14 @@ def set_include_in_backups(vms, vm, args):
     vm.include_in_backups = bool(eval(args[0].capitalize()))
     return True
 
+def set_include_in_backups(vms, vm, args):
+    if len (args) != 1:
+        print >> sys.stderr, "Missing value (True/False)!"
+        return False
+
+    vm.include_in_backups = bool(eval(args[0].capitalize()))
+    return True
+
 properties = {
     "include_in_backups": set_include_in_backups,
     "updateable": set_updateable,