diff --git a/manifests/server/proxy.pp b/manifests/server/proxy.pp
index 793c884..90218de 100644
--- a/manifests/server/proxy.pp
+++ b/manifests/server/proxy.pp
@@ -50,7 +50,7 @@ $acl_rule_front   = '',
 $acl_rule_back    = '',
 $backend_name     = undef,
 $backend_order    = '030',
-$fe_maxconn       = undef,
+$fe_maxconn       = '',
 $be_server_name   = undef,