diff --git a/components/esp_wifi/include/esp_wifi_types_generic.h b/components/esp_wifi/include/esp_wifi_types_generic.h
index 21bee273742..218dd06cbce 100644
--- a/components/esp_wifi/include/esp_wifi_types_generic.h
+++ b/components/esp_wifi/include/esp_wifi_types_generic.h
@@ -532,7 +532,7 @@ typedef struct {
     uint8_t ssid[32];                         /**< SSID of soft-AP. If ssid_len field is 0, this must be a Null terminated string. Otherwise, length is set according to ssid_len. */
     uint8_t password[64];                     /**< Password of soft-AP. */
     uint8_t ssid_len;                         /**< Optional length of SSID field. */
-    uint8_t channel;                          /**< Channel of soft-AP */
+    uint8_t channel;                          /**< Channel of soft-AP. Set to 0 for auto selection (min channel: typically 1 for 2.4G, 36 for 5G). Other invalid values return ESP_ERR_INVALID_ARG. */
     wifi_auth_mode_t authmode;                /**< Auth mode of soft-AP. Do not support AUTH_WEP, AUTH_WAPI_PSK and AUTH_OWE in soft-AP mode. When the auth mode is set to WPA2_PSK, WPA2_WPA3_PSK or WPA3_PSK, the pairwise cipher will be overwritten with WIFI_CIPHER_TYPE_CCMP by default, unless explicitly set.  */
     uint8_t ssid_hidden;                      /**< Broadcast SSID or not, default 0, broadcast the SSID */
     uint8_t max_connection;                   /**< Max number of stations allowed to connect in */