diff --git a/libraries/DataFlash/DataFlash.h b/libraries/DataFlash/DataFlash.h
index 1706b8f6d2..8ba6fed584 100644
--- a/libraries/DataFlash/DataFlash.h
+++ b/libraries/DataFlash/DataFlash.h
@@ -506,7 +506,7 @@ struct PACKED log_Esc {
     { LOG_EKF3_MSG, sizeof(log_EKF3), \
       "EKF3","Icccccchhhc","TimeMS,IVN,IVE,IVD,IPN,IPE,IPD,IMX,IMY,IMZ,IVT" }, \
     { LOG_EKF4_MSG, sizeof(log_EKF4), \
-      "EKF4","IcccccccbbBBB","TimeMS,SV,SP,SH,SMX,SMY,SMZ,SVT,OFN,EFE,FS,TS,SS" }, \
+      "EKF4","IcccccccbbBBH","TimeMS,SV,SP,SH,SMX,SMY,SMZ,SVT,OFN,EFE,FS,TS,SS" }, \
     { LOG_TERRAIN_MSG, sizeof(log_TERRAIN), \
       "TERR","IBLLHffHH","TimeMS,Status,Lat,Lng,Spacing,TerrH,CHeight,Pending,Loaded" }, \
     { LOG_UBX1_MSG, sizeof(log_Ubx1), \
diff --git a/libraries/DataFlash/LogFile.cpp b/libraries/DataFlash/LogFile.cpp
index 00fd056078..874fe3abc4 100644
--- a/libraries/DataFlash/LogFile.cpp
+++ b/libraries/DataFlash/LogFile.cpp
@@ -1002,7 +1002,7 @@ void DataFlash_Class::Log_Write_EKF(AP_AHRS_NavEKF &ahrs, bool optFlowEnabled)
         offsetEast : (int8_t)(offset.y),
         faults : (uint8_t)(faultStatus),
         timeouts : (uint8_t)(timeoutStatus),
-        solution : (uint8_t)(solutionStatus.value)
+        solution : (uint16_t)(solutionStatus.value)
     };
     WriteBlock(&pkt4, sizeof(pkt4));