diff --git a/main/esp32-lora.c b/main/esp32-lora.c
index eb46995..6383eef 100644
--- a/main/esp32-lora.c
+++ b/main/esp32-lora.c
@@ -420,7 +420,7 @@ void lora32_read_data(lora32_cfg_t *lora, uint8_t *data) {
 }
 
 static void IRAM_ATTR lora32_on_dio0(void *arg) {
-  xQueueSend(dio_event_queue, arg, (TickType_t)0);
+  xQueueSendFromISR(dio_event_queue, (void*)&arg, pdFALSE);
 }
 
 uint8_t lora32_spi_init(lora32_cfg_t *lora) {
@@ -540,7 +540,7 @@ uint8_t lora32_init(lora32_cfg_t *lora) {
       // enable global ISR service
       gpio_install_isr_service(0);
 
-      dio_event_queue = xQueueCreate(10, sizeof(lora32_cfg_t));
+      dio_event_queue = xQueueCreate(10, sizeof(lora32_cfg_t *));
 
       // this should probably be high priority
       xTaskCreate(&lora32_dio_task, "lora32_dio_task", 4096, NULL, 6, &dio_task_handle);