diff --git a/source/ubl-settings-usergroups.c b/source/ubl-settings-usergroups.c
index 57ca1a4..4620c92 100644
--- a/source/ubl-settings-usergroups.c
+++ b/source/ubl-settings-usergroups.c
@@ -89,7 +89,29 @@ void yon_gtk_tree_view_select_first(GtkTreeView *target){
 	}
 }
 
+int yon_config_check_valid(){
+	int size;
+	config_str parameters = yon_config_get_all_keys(&size);
+
+	int invalid_found = 0;
+	for (int i=0;i<size;i++){
+		int open_brackets = yon_char_count(parameters[i],"[");
+		int close_brackets = yon_char_count(parameters[i],"]");
+		if (open_brackets!=close_brackets||strstr(parameters[i],"\n")){
+			yon_config_remove_by_key(parameters[i]);
+			invalid_found = 1;
+		}
+	}
+	if (invalid_found){
+		yon_ubl_status_box_render(CONFIG_INVALID_LABEL,BACKGROUND_IMAGE_FAIL_TYPE);
+		return 0;
+	}
+	return 1;
+
+}
+
 void yon_interface_update(main_window *widgets){
+	if (!yon_config_check_valid()) return;
 	on_system_update(NULL,widgets);
 	int size;
 	GtkTreeIter iter;
diff --git a/source/ubl-settings-usergroups.h b/source/ubl-settings-usergroups.h
index b617b3f..8f51fb9 100644
--- a/source/ubl-settings-usergroups.h
+++ b/source/ubl-settings-usergroups.h
@@ -625,4 +625,5 @@ char *yon_user_get_system_groups(char *target_login);
 int yon_system_group_sync(char *group);
 int yon_system_user_sync(char *user);
 void on_homedir_changed(GtkComboBox *self, GtkWidget *target);
+int yon_config_check_valid();
 #endif
\ No newline at end of file