diff --git a/libraries/DataFlash/LogStructure.h b/libraries/DataFlash/LogStructure.h
index bddf2652a8..c519c6a041 100644
--- a/libraries/DataFlash/LogStructure.h
+++ b/libraries/DataFlash/LogStructure.h
@@ -622,6 +622,7 @@ struct PACKED log_Ubx1 {
     uint8_t  jamInd;
     uint8_t  aPower;
     uint16_t agcCnt;
+    uint32_t config;
 };
 
 struct PACKED log_Ubx2 {
@@ -1096,11 +1097,11 @@ Format characters in the format string for binary log messages
     { LOG_TERRAIN_MSG, sizeof(log_TERRAIN), \
       "TERR","QBLLHffHH","TimeUS,Status,Lat,Lng,Spacing,TerrH,CHeight,Pending,Loaded" }, \
     { LOG_GPS_UBX1_MSG, sizeof(log_Ubx1), \
-      "UBX1", "QBHBBH",  "TimeUS,Instance,noisePerMS,jamInd,aPower,agcCnt" }, \
+      "UBX1", "QBHBBHI",  "TimeUS,Instance,noisePerMS,jamInd,aPower,agcCnt,config" }, \
     { LOG_GPS_UBX2_MSG, sizeof(log_Ubx2), \
       "UBX2", "QBbBbB", "TimeUS,Instance,ofsI,magI,ofsQ,magQ" }, \
     { LOG_GPS2_UBX1_MSG, sizeof(log_Ubx1), \
-      "UBY1", "QBHBBH",  "TimeUS,Instance,noisePerMS,jamInd,aPower,agcCnt" }, \
+      "UBY1", "QBHBBHI",  "TimeUS,Instance,noisePerMS,jamInd,aPower,agcCnt,config" }, \
     { LOG_GPS2_UBX2_MSG, sizeof(log_Ubx2), \
       "UBY2", "QBbBbB", "TimeUS,Instance,ofsI,magI,ofsQ,magQ" }, \
     { LOG_GPS_RAW_MSG, sizeof(log_GPS_RAW), \