diff --git a/builder.go b/builder.go
index a1688327566e0b0b55b63649fcb1dbe83e6765c7..3d2fc77cbd3d63a46aa27319f5032e6be440ba7b 100644
--- a/builder.go
+++ b/builder.go
@@ -38,7 +38,7 @@ func (p V0Builder) Sum(data []byte) (Cid, error) {
 	if err != nil {
 		return Undef, err
 	}
-	return NewCidV0(hash), nil
+	return Cid{string(hash)}, nil
 }
 
 func (p V0Builder) GetCodec() uint64 {
diff --git a/cid.go b/cid.go
index 60810eba5799d70559b4c89d35a139a504a1ec25..2bb1e6043a30165839c51e845dce201458c50577 100644
--- a/cid.go
+++ b/cid.go
@@ -613,7 +613,7 @@ func CidFromBytes(data []byte) (int, Cid, error) {
 			return 0, Undef, err
 		}
 
-		return 34, NewCidV0(h), nil
+		return 34, Cid{string(h)}, nil
 	}
 
 	vers, n := binary.Uvarint(data)