diff --git a/commands.c b/commands.c
index d10c489..02fa030 100644
--- a/commands.c
+++ b/commands.c
@@ -615,9 +615,7 @@ static DBusHandlerResult monitor_changed(DBusConnection *connection,
 	json_object_object_add(res, key_command_path,
 			json_object_new_string(path));
 	json_object_object_add(res, key_command_data, dbus_to_json(&iter));
-
 	json_object_object_add(res, key_signal, sig_name);
-	json_object_get(res);
 
 	commands_signal(res);
 
diff --git a/engine.c b/engine.c
index 2f7ef9e..11146b3 100644
--- a/engine.c
+++ b/engine.c
@@ -788,7 +788,7 @@ static void react_to_sig_service(struct json_object *interface,
 
 	if (serv_dict && json_object_object_get_ex(serv_dict, key, NULL)) {
 		json_object_object_del(serv_dict, key);
-		json_object_object_add(serv_dict, key, val);
+		json_object_object_add(serv_dict, key, json_object_get(val));
 	}
 }
 
@@ -818,7 +818,7 @@ static void react_to_sig_technology(struct json_object *interface,
 
 	if (tech_dict && json_object_object_get_ex(tech_dict, key, NULL)) {
 		json_object_object_del(tech_dict, key);
-		json_object_object_add(tech_dict, key, val);
+		json_object_object_add(tech_dict, key, json_object_get(val));
 	}
 }
 
diff --git a/main.c b/main.c
index 9613969..208d304 100644
--- a/main.c
+++ b/main.c
@@ -446,7 +446,10 @@ static void exec_action(struct userptr_data *data)
  */
 static void exec_back(void)
 {
-	if (context.current_context != CONTEXT_SERVICE_CONFIG_STANDALONE)
+	if (context.current_context == CONTEXT_SERVICE_CONFIG_STANDALONE) {
+		free(context.serv->dbus_name);
+		context.serv->dbus_name = NULL;
+	} else
 		context_free_userptr_data();
 
 	context_actions[context.current_context].func_free();
@@ -478,9 +481,10 @@ static void action_on_cmd_callback(struct json_object *jobj)
 	else if (strcmp(key_engine_get_service, cmd_name) == 0) {
 		tmp = json_object_new_object();
 		array = json_object_new_array();
-		json_object_array_add(array, data);
+		json_object_array_add(array, json_object_get(data));
 		json_object_object_add(tmp, key_services, array);
 		__renderers_services(tmp);
+		json_object_put(tmp);
 
 	} else
 		print_info_in_footer(true, "Unknown command called");
@@ -531,7 +535,8 @@ static void action_on_signal(struct json_object *jobj)
 			got_removed = true;
 	}
 
-	if (context.current_context == CONTEXT_SERVICE_CONFIG) {
+	if (context.current_context == CONTEXT_SERVICE_CONFIG ||
+			context.current_context == CONTEXT_SERVICE_CONFIG_STANDALONE) {
 		if (context.serv->dbus_name == NULL)
 			return;
 
@@ -899,6 +904,9 @@ static void print_services_for_tech(void)
 {
 	struct json_object *cmd, *tmp;
 
+	if (!context.tech || !context.tech->dbus_name)
+		return;
+
 	cmd = json_object_new_object();
 	tmp = json_object_new_object();
 
@@ -919,6 +927,9 @@ static void connect_to_service(void)
 {
 	struct json_object *cmd, *tmp;
 
+	if (!context.serv || !context.serv->dbus_name)
+		return;
+
 	cmd = json_object_new_object();
 	tmp = json_object_new_object();
 
@@ -945,6 +956,9 @@ static void disconnect_of_service(struct userptr_data *data)
 {
 	struct json_object *cmd, *tmp;
 
+	if (!data || !data->dbus_name)
+		return;
+
 	cmd = json_object_new_object();
 	tmp = json_object_new_object();
 
@@ -966,6 +980,9 @@ static void toggle_power_tech(struct userptr_data *data)
 {
 	struct json_object *cmd, *tmp;
 
+	if (!data || !data->dbus_name)
+		return;
+
 	cmd = json_object_new_object();
 	tmp = json_object_new_object();
 
@@ -1002,6 +1019,9 @@ static void scan_tech(const char *tech_dbus_name)
 {
 	struct json_object *cmd, *tmp;
 
+	if (!tech_dbus_name)
+		return;
+
 	cmd = json_object_new_object();
 	tmp = json_object_new_object();
 
@@ -1024,6 +1044,9 @@ static void remove_service(struct userptr_data *data)
 {
 	struct json_object *cmd, *tmp;
 
+	if (!data || !data->dbus_name)
+		return;
+
 	cmd = json_object_new_object();
 	tmp = json_object_new_object();
 
@@ -1045,7 +1068,7 @@ static void get_service_settings(void)
 {
 	struct json_object *cmd, *tmp;
 
-	if (!context.serv->dbus_name)
+	if (!context.serv || !context.serv->dbus_name)
 		return;
 
 	cmd = json_object_new_object();
@@ -1165,6 +1188,9 @@ static void modify_service_config(void)
 	const char *are_obj[] = { key_serv_ipv4_config, key_serv_ipv6_config,
 		key_serv_proxy_config };
 
+	if (!context.serv || !context.serv->dbus_name)
+		return;
+
 	for (i = 0; main_fields[i]; i++) {
 		if (!((unsigned)field_opts(main_fields[i]) & O_EDIT))
 			continue;
@@ -1391,6 +1417,7 @@ static void exec_action_context_services(int ch)
 				break;
 
 			context.serv->dbus_name = strdup(userptr->dbus_name);
+			__renderers_free_services();
 			get_service_settings();
 			break;
 	}