diff --git a/source/ubl-settings-system.c b/source/ubl-settings-system.c
index 461ecef..87d0585 100644
--- a/source/ubl-settings-system.c
+++ b/source/ubl-settings-system.c
@@ -688,7 +688,7 @@ void config_init(){
     main_config.domain_connected=0;
 }
 
-void on_check_domain_connected(main_window *widgets){
+void on_check_domain_connected(GtkWidget *self, main_window *widgets){
     int ansv = system(domain_connect_check);
     printf("%d\n",ansv);
     if (!ansv){
diff --git a/source/ubl-settings-system.h b/source/ubl-settings-system.h
index 3b2e617..daefef2 100644
--- a/source/ubl-settings-system.h
+++ b/source/ubl-settings-system.h
@@ -186,4 +186,6 @@ typedef struct {
 } domain_info_window;
 
 main_window *setup_window();
-void on_id_changed(GtkEntry *self, main_window *widgets);
\ No newline at end of file
+void on_id_changed(GtkEntry *self, main_window *widgets);
+
+void on_check_domain_connected(GtkWidget *self, main_window *widgets);
\ No newline at end of file