diff --git a/src/SparkFun_Ublox_Arduino_Library.h b/src/SparkFun_Ublox_Arduino_Library.h
index 2c2292b..fbce0ca 100644
--- a/src/SparkFun_Ublox_Arduino_Library.h
+++ b/src/SparkFun_Ublox_Arduino_Library.h
@@ -451,7 +451,7 @@ class SFE_UBLOX_GPS
 	boolean autoPVT = false;			  //Whether autoPVT is enabled or not
 	boolean autoPVTImplicitUpdate = true; // Whether autoPVT is triggered by accessing stale data (=true) or by a call to checkUblox (=false)
 	boolean commandAck = false;			  //This goes true after we send a command and it's ack'd
-	uint8_t ubxFrameCounter;
+	uint16_t ubxFrameCounter;			  //It counts all UBX frame. [Fixed header(2bytes), CLS(1byte), ID(1byte), length(2bytes), payload(x bytes), checksums(2bytes)]
 
 	uint8_t rollingChecksumA; //Rolls forward as we receive incoming bytes. Checked against the last two A/B checksum bytes
 	uint8_t rollingChecksumB; //Rolls forward as we receive incoming bytes. Checked against the last two A/B checksum bytes