diff --git a/src/main/java/org/eolang/lints/MeasuredXsl.java b/src/main/java/org/eolang/lints/MeasuredXsl.java
index 16a5e18b..64328f11 100644
--- a/src/main/java/org/eolang/lints/MeasuredXsl.java
+++ b/src/main/java/org/eolang/lints/MeasuredXsl.java
@@ -32,7 +32,7 @@
  * XSL that measures the time of transformation.
  * @since 0.1
  */
-public final class MeasuredXsl implements XSL {
+final class MeasuredXsl implements XSL {
 
     /**
      * Default threshold in milliseconds.