diff --git a/public/Gap.h b/public/Gap.h
index e7b4dac..f6f5db0 100644
--- a/public/Gap.h
+++ b/public/Gap.h
@@ -164,12 +164,12 @@ public:
     };
     typedef FunctionPointerWithContext<const AdvertisementCallbackParams_t *> AdvertisementReportCallback_t;
 
-    typedef void (*AdvertisementReportCallback_t)(const address_t       peerAddr,
-                                                  int8_t                rssi,
-                                                  bool                  isScanResponse,
-                                                  AdvertisementType_t   type,
-                                                  uint8_t              *advertisingDataLenPtr,
-                                                  const uint8_t       **advertisingDataPtr);
+    typedef void (*AdvertisementReportCallback_t)(const address_t      peerAddr,
+                                                  int8_t               rssi,
+                                                  bool                 isScanResponse,
+                                                  AdvertisementType_t  type,
+                                                  uint8_t              advertisingDataLen,
+                                                  const uint8_t       *advertisingData);
 
     friend class BLEDevice;