diff --git a/common.go b/common.go
index 2655ead..155bfc5 100644
--- a/common.go
+++ b/common.go
@@ -1650,7 +1650,10 @@ func (c *Config) writeKeyLog(label string, clientRandom, secret []byte) error {
 	_, err := c.KeyLogWriter.Write(logLine)
 	writerMutex.Unlock()
 
-	return err
+	if err != nil {
+		return fmt.Errorf("tls: KeyLogWriter: %w", err)
+	}
+	return nil
 }
 
 // writerMutex protects all KeyLogWriters globally. It is rarely enabled,