diff --git a/lib/nfc/protocols/mifare_ultralight.h b/lib/nfc/protocols/mifare_ultralight.h
index 3c8807433..8f5c80fff 100644
--- a/lib/nfc/protocols/mifare_ultralight.h
+++ b/lib/nfc/protocols/mifare_ultralight.h
@@ -171,7 +171,7 @@ typedef struct {
 } MfUltralightReader;
 
 // TODO rework with reader analyzer
-// typedef void (*MfUltralightAuthReceivedCallback)(MfUltralightAuth auth, void* context);
+typedef void (*MfUltralightAuthReceivedCallback)(MfUltralightAuth auth, void* context);
 
 typedef struct {
     MfUltralightData data;