diff --git a/components/sx127x_driver/sx127x_driver.c b/components/sx127x_driver/sx127x_driver.c
index a57f859..5f53aa6 100644
--- a/components/sx127x_driver/sx127x_driver.c
+++ b/components/sx127x_driver/sx127x_driver.c
@@ -137,6 +137,8 @@ esp_err_t sx127x_free(sx127x_t *hndl) {
   ret = spi_bus_free(hndl->config.spi_host);
   SX127X_ERROR_CHECK2(ret, spi_bus_free)
 
+  vSemaphoreDelete(hndl->spi_mutex);
+
   free(hndl);
 
   return ESP_OK;
@@ -368,6 +370,9 @@ esp_err_t sx127x_stop(sx127x_t *hndl) {
   }
   hndl->task_handle = NULL;
 
+  vQueueDelete(hndl->rx_packet_queue);
+  vQueueDelete(hndl->tx_packet_queue);
+
   return ESP_OK;
 }