diff --git a/unmarshaller_test.go b/unmarshaller_test.go
index 79cec85..155da3e 100644
--- a/unmarshaller_test.go
+++ b/unmarshaller_test.go
@@ -73,7 +73,7 @@ func TestUnmarshalListOfStructsAfterMarshal(t *testing.T) {
 		t.Fatalf("Error marshalling data to CSV: %#v", err)
 	}
 
-	if string(buffer.Bytes()) != "Additional|Key\nnull|test\n" {
+	if buffer.String() != "Additional|Key\nnull|test\n" {
 		t.Fatalf("Marshalled data had an unexpected form of %s", buffer.Bytes())
 	}