diff --git a/components/esp8266/include/esp_wifi.h b/components/esp8266/include/esp_wifi.h
index ab156f62..e88defac 100644
--- a/components/esp8266/include/esp_wifi.h
+++ b/components/esp8266/include/esp_wifi.h
@@ -90,9 +90,6 @@ extern "C" {
 
 #define ESP_WIFI_PARAM_USE_NVS  0
 
-#define WIFI_PROTOCAL_11B  1
-#define WIFI_PROTOCAL_11G  2
-#define WIFI_PROTOCAL_11N  4
 /**
  * @brief WiFi stack configuration parameters passed to esp_wifi_init call.
  */
diff --git a/components/mqtt/esp-mqtt/examples/emitter-client/main/app_main.c b/components/mqtt/esp-mqtt/examples/emitter-client/main/app_main.c
index f8e64817..7b7197c0 100755
--- a/components/mqtt/esp-mqtt/examples/emitter-client/main/app_main.c
+++ b/components/mqtt/esp-mqtt/examples/emitter-client/main/app_main.c
@@ -44,7 +44,7 @@ static esp_err_t wifi_event_handler(void *ctx, system_event_t *event)
             ESP_LOGE(TAG, "Disconnect reason : %d", info->disconnected.reason);
             if (info->disconnected.reason == WIFI_REASON_BASIC_RATE_NOT_SUPPORT) {
                 /*Switch to 802.11 bgn mode */
-                esp_wifi_set_protocol(ESP_IF_WIFI_STA, WIFI_PROTOCAL_11B | WIFI_PROTOCAL_11G | WIFI_PROTOCAL_11N);
+                esp_wifi_set_protocol(ESP_IF_WIFI_STA, WIFI_PROTOCOL_11B | WIFI_PROTOCOL_11G | WIFI_PROTOCOL_11N);
             }
             esp_wifi_connect();
             xEventGroupClearBits(wifi_event_group, CONNECTED_BIT);
diff --git a/examples/common_components/protocol_examples_common/connect.c b/examples/common_components/protocol_examples_common/connect.c
index fd348c8a..8d8b2bb4 100644
--- a/examples/common_components/protocol_examples_common/connect.c
+++ b/examples/common_components/protocol_examples_common/connect.c
@@ -50,7 +50,7 @@ static void on_wifi_disconnect(void *arg, esp_event_base_t event_base,
     ESP_LOGI(TAG, "Wi-Fi disconnected, trying to reconnect...");
     if (event->reason == WIFI_REASON_BASIC_RATE_NOT_SUPPORT) {
         /*Switch to 802.11 bgn mode */
-        esp_wifi_set_protocol(ESP_IF_WIFI_STA, WIFI_PROTOCAL_11B | WIFI_PROTOCAL_11G | WIFI_PROTOCAL_11N);
+        esp_wifi_set_protocol(ESP_IF_WIFI_STA, WIFI_PROTOCOL_11B | WIFI_PROTOCOL_11G | WIFI_PROTOCOL_11N);
     }
     ESP_ERROR_CHECK(esp_wifi_connect());
 }
diff --git a/examples/provisioning/custom_config/main/app_prov.c b/examples/provisioning/custom_config/main/app_prov.c
index ad7253e3..64403ce5 100644
--- a/examples/provisioning/custom_config/main/app_prov.c
+++ b/examples/provisioning/custom_config/main/app_prov.c
@@ -217,7 +217,7 @@ esp_err_t app_prov_event_handler(void *ctx, system_event_t *event)
             g_prov->wifi_state = WIFI_PROV_STA_CONNECTING;
             if (info->disconnected.reason == WIFI_REASON_BASIC_RATE_NOT_SUPPORT) {
                 /*Switch to 802.11 bgn mode */
-                esp_wifi_set_protocol(ESP_IF_WIFI_STA, WIFI_PROTOCAL_11B | WIFI_PROTOCAL_11G | WIFI_PROTOCAL_11N);
+                esp_wifi_set_protocol(ESP_IF_WIFI_STA, WIFI_PROTOCOL_11B | WIFI_PROTOCOL_11G | WIFI_PROTOCOL_11N);
             }
             esp_wifi_connect();
         }
diff --git a/examples/provisioning/softap_prov/main/app_prov.c b/examples/provisioning/softap_prov/main/app_prov.c
index 864fe7fc..495c0899 100644
--- a/examples/provisioning/softap_prov/main/app_prov.c
+++ b/examples/provisioning/softap_prov/main/app_prov.c
@@ -200,7 +200,7 @@ esp_err_t app_prov_event_handler(void *ctx, system_event_t *event)
         default:
             if (info->disconnected.reason == WIFI_REASON_BASIC_RATE_NOT_SUPPORT) {
                 /*Switch to 802.11 bgn mode */
-                esp_wifi_set_protocol(ESP_IF_WIFI_STA, WIFI_PROTOCAL_11B | WIFI_PROTOCAL_11G | WIFI_PROTOCAL_11N);
+                esp_wifi_set_protocol(ESP_IF_WIFI_STA, WIFI_PROTOCOL_11B | WIFI_PROTOCOL_11G | WIFI_PROTOCOL_11N);
             }
             /* If none of the expected reasons,
              * retry connecting to host SSID */
diff --git a/examples/system/console/main/cmd_wifi.c b/examples/system/console/main/cmd_wifi.c
index c60f1e81..8233203d 100644
--- a/examples/system/console/main/cmd_wifi.c
+++ b/examples/system/console/main/cmd_wifi.c
@@ -36,7 +36,7 @@ static esp_err_t event_handler(void *ctx, system_event_t *event)
         ESP_LOGI(__func__, "Disconnect reason : %d", info->disconnected.reason);
         if (info->disconnected.reason == WIFI_REASON_BASIC_RATE_NOT_SUPPORT) {
             /*Switch to 802.11 bgn mode */
-            esp_wifi_set_protocol(ESP_IF_WIFI_STA, WIFI_PROTOCAL_11B | WIFI_PROTOCAL_11G | WIFI_PROTOCAL_11N);
+            esp_wifi_set_protocol(ESP_IF_WIFI_STA, WIFI_PROTOCOL_11B | WIFI_PROTOCOL_11G | WIFI_PROTOCOL_11N);
         }
         esp_wifi_connect();
         xEventGroupClearBits(wifi_event_group, CONNECTED_BIT);
diff --git a/examples/wifi/smart_config/main/smartconfig_main.c b/examples/wifi/smart_config/main/smartconfig_main.c
index 52c2f22b..d18d882e 100644
--- a/examples/wifi/smart_config/main/smartconfig_main.c
+++ b/examples/wifi/smart_config/main/smartconfig_main.c
@@ -41,7 +41,7 @@ static void on_wifi_disconnect(void *arg, esp_event_base_t event_base,
     ESP_LOGI(TAG, "Wi-Fi disconnected, trying to reconnect...");
     if (event->reason == WIFI_REASON_BASIC_RATE_NOT_SUPPORT) {
         /*Switch to 802.11 bgn mode */
-        esp_wifi_set_protocol(ESP_IF_WIFI_STA, WIFI_PROTOCAL_11B | WIFI_PROTOCAL_11G | WIFI_PROTOCAL_11N);
+        esp_wifi_set_protocol(ESP_IF_WIFI_STA, WIFI_PROTOCOL_11B | WIFI_PROTOCOL_11G | WIFI_PROTOCOL_11N);
     }
     ESP_ERROR_CHECK(esp_wifi_connect());
 }
diff --git a/examples/wifi/wpa2_enterprise/main/wpa2_enterprise_main.c b/examples/wifi/wpa2_enterprise/main/wpa2_enterprise_main.c
index 1c9eb3db..ac6ec782 100644
--- a/examples/wifi/wpa2_enterprise/main/wpa2_enterprise_main.c
+++ b/examples/wifi/wpa2_enterprise/main/wpa2_enterprise_main.c
@@ -87,7 +87,7 @@ static void event_handler(void* arg, esp_event_base_t event_base,
 
         if (event->reason == WIFI_REASON_BASIC_RATE_NOT_SUPPORT) {
             /*Switch to 802.11 bgn mode */
-            esp_wifi_set_protocol(ESP_IF_WIFI_STA, WIFI_PROTOCAL_11B | WIFI_PROTOCAL_11G | WIFI_PROTOCAL_11N);
+            esp_wifi_set_protocol(ESP_IF_WIFI_STA, WIFI_PROTOCOL_11B | WIFI_PROTOCOL_11G | WIFI_PROTOCOL_11N);
         }
         esp_wifi_connect();
         xEventGroupClearBits(wifi_event_group, WIFI_CONNECTED_BIT);
diff --git a/examples/wifi/wps/main/wps.c b/examples/wifi/wps/main/wps.c
index 6ab5a813..f5cf8d46 100644
--- a/examples/wifi/wps/main/wps.c
+++ b/examples/wifi/wps/main/wps.c
@@ -52,7 +52,7 @@ static void wifi_event_handler(void* arg, esp_event_base_t event_base,
                 ESP_LOGI(TAG, "WIFI_EVENT_STA_DISCONNECTED");
                 if (event->reason == WIFI_REASON_BASIC_RATE_NOT_SUPPORT) {
                     /*Switch to 802.11 bgn mode */
-                    esp_wifi_set_protocol(ESP_IF_WIFI_STA, WIFI_PROTOCAL_11B | WIFI_PROTOCAL_11G | WIFI_PROTOCAL_11N);
+                    esp_wifi_set_protocol(ESP_IF_WIFI_STA, WIFI_PROTOCOL_11B | WIFI_PROTOCOL_11G | WIFI_PROTOCOL_11N);
                 }
                 ESP_ERROR_CHECK(esp_wifi_connect());
             }