diff --git a/esphome/components/wifi/wifi_component.h b/esphome/components/wifi/wifi_component.h
index d92a7faeb3a..2ef53f69466 100644
--- a/esphome/components/wifi/wifi_component.h
+++ b/esphome/components/wifi/wifi_component.h
@@ -58,12 +58,6 @@ static constexpr int8_t WIFI_RSSI_DISCONNECTED = -127;
 /// Buffer size for SSID (IEEE 802.11 max 32 bytes + null terminator)
 static constexpr size_t SSID_BUFFER_SIZE = 33;
 
-#ifdef USE_ESP8266
-/// Special disconnect reason for authmode downgrade (CVE-2020-12638 mitigation)
-/// Not a real WiFi reason code - used internally for deferred logging
-static constexpr uint8_t WIFI_DISCONNECT_REASON_AUTHMODE_DOWNGRADE = 254;
-#endif
-
 struct SavedWifiSettings {
   char ssid[33];
   char password[65];
diff --git a/esphome/components/wifi/wifi_component_esp8266.cpp b/esphome/components/wifi/wifi_component_esp8266.cpp
index 5026fbcb94f..3ae3b69174d 100644
--- a/esphome/components/wifi/wifi_component_esp8266.cpp
+++ b/esphome/components/wifi/wifi_component_esp8266.cpp
@@ -42,6 +42,10 @@ namespace esphome::wifi {
 
 static const char *const TAG = "wifi_esp8266";
 
+/// Special disconnect reason for authmode downgrade (CVE-2020-12638 mitigation)
+/// Not a real WiFi reason code - used internally for deferred logging
+static constexpr uint8_t WIFI_DISCONNECT_REASON_AUTHMODE_DOWNGRADE = 254;
+
 static bool s_sta_connected = false;          // NOLINT(cppcoreguidelines-avoid-non-const-global-variables)
 static bool s_sta_got_ip = false;             // NOLINT(cppcoreguidelines-avoid-non-const-global-variables)
 static bool s_sta_connect_not_found = false;  // NOLINT(cppcoreguidelines-avoid-non-const-global-variables)