diff --git a/goutubedl.go b/goutubedl.go
index f7ad73b..33091f8 100644
--- a/goutubedl.go
+++ b/goutubedl.go
@@ -319,9 +319,9 @@ func infoFromURL(ctx context.Context, rawURL string, options Options) (info Info
 	isPlaylist := info.Type == "playlist" || info.Type == "multi_video"
 	switch {
 	case options.Type == TypePlaylist && !isPlaylist:
-		return Info{}, nil, fmt.Errorf("not a playlist")
+		return Info{}, nil, fmt.Errorf("is not a playlist")
 	case options.Type == TypeSingle && isPlaylist:
-		return Info{}, nil, fmt.Errorf("not a single")
+		return Info{}, nil, fmt.Errorf("is not a single entry")
 	default:
 		// any type
 	}
@@ -406,7 +406,7 @@ func (result Result) Download(ctx context.Context, filter string) (*DownloadResu
 	debugLog := result.Options.DebugLog
 
 	if result.Info.Type == "playlist" || result.Info.Type == "multi_video" {
-		return nil, fmt.Errorf("is a playlist")
+		return nil, fmt.Errorf("can't download a playlist")
 	}
 
 	tempPath, tempErr := ioutil.TempDir("", "ydls")
diff --git a/goutubedl_test.go b/goutubedl_test.go
index 63dd1bc..f4bd019 100644
--- a/goutubedl_test.go
+++ b/goutubedl_test.go
@@ -233,22 +233,22 @@ func TestSubtitles(t *testing.T) {
 	}
 }
 
-func TestErrorNotAPlaylist(t *testing.T) {
+func TestErrorIsNotAPlaylist(t *testing.T) {
 	_, ydlResultErr := New(context.Background(), testVideoRawURL, Options{
 		Type:              TypePlaylist,
 		DownloadThumbnail: false,
 	})
-	if ydlResultErr.Error() != "not a playlist" {
+	if ydlResultErr.Error() != "is not a playlist" {
 		t.Errorf("expected is playlist error")
 	}
 }
 
-func TestErrorNotASingle(t *testing.T) {
+func TestErrorIsNotASingleEntry(t *testing.T) {
 	_, ydlResultErr := New(context.Background(), playlistRawURL, Options{
 		Type:              TypeSingle,
 		DownloadThumbnail: false,
 	})
-	if ydlResultErr.Error() != "not a single" {
-		t.Errorf("expected is playlist error")
+	if ydlResultErr.Error() != "is not a single entry" {
+		t.Errorf("expected is not a playlist error")
 	}
 }