diff --git a/.golangci.yml b/.golangci.yml
index 5932275..29d2a6c 100644
--- a/.golangci.yml
+++ b/.golangci.yml
@@ -136,7 +136,7 @@ linters-settings:
     check-generated: false
     default-signifies-exhaustive: false
   funlen:
-    lines: 60
+    lines: 65
     statements: 40
   gocognit:
     min-complexity: 25
diff --git a/core/logger/buffer_logger_test.go b/core/logger/buffer_logger_test.go
index b7b9fe4..8d1dbcd 100644
--- a/core/logger/buffer_logger_test.go
+++ b/core/logger/buffer_logger_test.go
@@ -59,16 +59,12 @@ type bufferLogger struct {
 }
 
 // newBufferLoggerSilent returns new BufferedLogger instance which won't duplicate entries to stdout/stderr.
-func newBufferLoggerSilent(level ...zapcore.Level) *bufferLogger {
-	lvl := zapcore.DebugLevel
-	if len(level) > 0 {
-		lvl = level[0]
-	}
+func newBufferLoggerSilent() *bufferLogger {
 	bl := &bufferLogger{}
 	bl.Logger = zap.New(
 		zapcore.NewCore(
 			NewJSONWithContextEncoder(
-				EncoderConfigJSON()), &bl.buf, lvl))
+				EncoderConfigJSON()), &bl.buf, zapcore.DebugLevel))
 	return bl
 }