diff --git a/components/driver/include/driver/rmt.h b/components/driver/include/driver/rmt.h
index 24df1ac8e..36e33e732 100644
--- a/components/driver/include/driver/rmt.h
+++ b/components/driver/include/driver/rmt.h
@@ -524,7 +524,9 @@ esp_err_t rmt_set_err_intr_en(rmt_channel_t channel, bool en);
 esp_err_t rmt_set_tx_intr_en(rmt_channel_t channel, bool en);
 
 /**
- * @brief Set RMT TX event interrupt enable
+ * @brief Set RMT TX threshold event interrupt enable
+ *
+ * Causes an interrupt when a threshold number of items have been transmitted.
  *
  * @param channel RMT channel (0 - 7)
  *
@@ -536,7 +538,7 @@ esp_err_t rmt_set_tx_intr_en(rmt_channel_t channel, bool en);
  *     - ESP_ERR_INVALID_ARG Parameter error
  *     - ESP_OK Success
  */
-esp_err_t rmt_set_evt_intr_en(rmt_channel_t channel, bool en, uint16_t evt_thresh);
+esp_err_t rmt_set_tx_thr_intr_en(rmt_channel_t channel, bool en, uint16_t evt_thresh);
 
 /**
  * @brief Set RMT pins
diff --git a/components/driver/rmt.c b/components/driver/rmt.c
index a16f0f8fe..d277ea00c 100644
--- a/components/driver/rmt.c
+++ b/components/driver/rmt.c
@@ -341,7 +341,7 @@ esp_err_t rmt_set_tx_intr_en(rmt_channel_t channel, bool en)
     return ESP_OK;
 }
 
-esp_err_t rmt_set_evt_intr_en(rmt_channel_t channel, bool en, uint16_t evt_thresh)
+esp_err_t rmt_set_tx_thr_intr_en(rmt_channel_t channel, bool en, uint16_t evt_thresh)
 {
     RMT_CHECK(channel < RMT_CHANNEL_MAX, RMT_CHANNEL_ERROR_STR, ESP_ERR_INVALID_ARG);
     RMT_CHECK(evt_thresh < 256, "RMT EVT THRESH ERR", ESP_ERR_INVALID_ARG);
@@ -624,7 +624,7 @@ esp_err_t rmt_driver_uninstall(rmt_channel_t channel)
     rmt_set_rx_intr_en(channel, 0);
     rmt_set_err_intr_en(channel, 0);
     rmt_set_tx_intr_en(channel, 0);
-    rmt_set_evt_intr_en(channel, 0, 0xffff);
+    rmt_set_tx_thr_intr_en(channel, 0, 0xffff);
     if(p_rmt_obj[channel]->tx_sem) {
         vSemaphoreDelete(p_rmt_obj[channel]->tx_sem);
         p_rmt_obj[channel]->tx_sem = NULL;
@@ -697,7 +697,7 @@ esp_err_t rmt_write_items(rmt_channel_t channel, rmt_item32_t* rmt_item, int ite
         RMT.apb_conf.mem_tx_wrap_en = 1;
         len_rem -= item_block_len;
         RMT.conf_ch[channel].conf1.tx_conti_mode = 0;
-        rmt_set_evt_intr_en(channel, 1, item_sub_len);
+        rmt_set_tx_thr_intr_en(channel, 1, item_sub_len);
         p_rmt->tx_data = rmt_item + item_block_len;
         p_rmt->tx_len_rem = len_rem;
         p_rmt->tx_offset = 0;