opus_test.go | 4 ++--

diff --git a/opus_test.go b/opus_test.go
index ae703a0acb3378c3a0e905f0f8f972f433095ac4..786f901fab0eb594ebaaa5d94091152b9fafd9e4 100644
--- a/opus_test.go
+++ b/opus_test.go
@@ -19,9 +19,9 @@ func TestOpusErrstr(t *testing.T) {
 	// I scooped this -1 up from opus_defines.h, it's OPUS_BAD_ARG. Not pretty,
 	// but it's better than not testing at all. Again, accessing #defines from
 	// CGO is not possible.
-	if ERR_OPUS_BAD_ARG.Error() != "opus: invalid argument" {
+	if ErrBadArg.Error() != "opus: invalid argument" {
 		t.Errorf("Expected \"invalid argument\" error message for error code %d: %v",
-			ERR_OPUS_BAD_ARG, ERR_OPUS_BAD_ARG)
+			ErrBadArg, ErrBadArg)
 	}
 }