diff --git a/zstd/encoder_options.go b/zstd/encoder_options.go
index c7f709ef18..5f2e1d020e 100644
--- a/zstd/encoder_options.go
+++ b/zstd/encoder_options.go
@@ -190,10 +190,9 @@ func EncoderLevelFromZstd(level int) EncoderLevel {
 		return SpeedDefault
 	case level >= 6 && level < 10:
 		return SpeedBetterCompression
-	case level >= 10:
+	default:
 		return SpeedBestCompression
 	}
-	return SpeedDefault
 }
 
 // String provides a string representation of the compression level.