diff --git a/blockchain/Block Record Profile.go b/blockchain/Block Record Profile.go
index 260e200..ecac278 100644
--- a/blockchain/Block Record Profile.go	
+++ b/blockchain/Block Record Profile.go	
@@ -55,7 +55,7 @@ func encodeBlockRecordProfile(fields []BlockRecordProfile) (recordsRaw []BlockRe
 	}
 
 	for n := range fields {
-		if len(fields[n].Data) > math.MaxUint32 {
+		if uint64(len(fields[n].Data)) > math.MaxUint32 {
 			return nil, errors.New("exceeding max field size")
 		}