diff --git a/code/espurna/config/prototypes.h b/code/espurna/config/prototypes.h
index 11978cd6b3..2eaec59986 100644
--- a/code/espurna/config/prototypes.h
+++ b/code/espurna/config/prototypes.h
@@ -221,6 +221,7 @@ void mqttSendStatus();
 // OTA
 // -----------------------------------------------------------------------------
 
+#include <Updater.h>
 #include <ArduinoOTA.h>
 
 #if OTA_CLIENT == OTA_CLIENT_ASYNCTCP