diff --git a/src/OtaHandler.cpp b/src/OtaHandler.cpp
index 1e2ec64..b2179db 100644
--- a/src/OtaHandler.cpp
+++ b/src/OtaHandler.cpp
@@ -1,5 +1,7 @@
 #include "OtaHandler.h"
 
+#ifndef ESP8266 // Only for esp32 based mcu
+
 void OtaHandler::setHandlerCallback(OtaHandlerCallback_t callback) { _callback = callback; }
 
 void OtaHandler::updateFirmwareIfOutdated(String deviceId) {
@@ -161,4 +163,6 @@ OtaHandler::attemptToPerformOta(const esp_http_client_config_t *config) {
 void OtaHandler::cleanupHttp(esp_http_client_handle_t client) {
   esp_http_client_close(client);
   esp_http_client_cleanup(client);
-}
\ No newline at end of file
+}
+
+#endif
\ No newline at end of file