diff --git a/src/bin/options_servers.c b/src/bin/options_servers.c
index 5917256..02ecc89 100644
--- a/src/bin/options_servers.c
+++ b/src/bin/options_servers.c
@@ -139,6 +139,7 @@ _options_servers(Evas_Object *box, Evas_Object *base EINA_UNUSED, Config_Network
    Evas_Object *fr, *vbox, *tb, *o;
    Eina_List *l = NULL;
    Config_Server *cfg_srv;
+   static Elm_Entry_Filter_Accept_Set filter;
 
    _cfg_net = cfg_net;
 
@@ -260,6 +261,11 @@ _options_servers(Evas_Object *box, Evas_Object *base EINA_UNUSED, Config_Network
    elm_table_pack(tb, o_port, 1, 1, 2, 1);
    evas_object_show(o_port);
 
+   filter.accepted = "0123456789";
+   filter.rejected = NULL;
+   elm_entry_markup_filter_append(o_port, 
+                                  elm_entry_filter_accept_set, &filter);
+
    elm_object_disabled_set(o_name, EINA_TRUE);
    elm_object_disabled_set(o_port, EINA_TRUE);
 }