diff --git a/utam-compiler/src/main/java/utam/compiler/lint/LintingConfigJson.java b/utam-compiler/src/main/java/utam/compiler/lint/LintingConfigJson.java
index c140bcc3..040fa364 100644
--- a/utam-compiler/src/main/java/utam/compiler/lint/LintingConfigJson.java
+++ b/utam-compiler/src/main/java/utam/compiler/lint/LintingConfigJson.java
@@ -135,6 +135,7 @@ public void finish(LintingContext context) {
       List<PageObjectLinting> all = context.getAllPageObjects();
       for (int i = 0; i < all.size(); i++) {
         PageObjectLinting first = all.get(i);
+        UtamLogger.info(String.format("finish linting for %s", first.getJsonFilePath()));
         for (int j = i + 1; j < all.size(); j++) {
           PageObjectLinting second = all.get(j);
           for (LintingRuleImpl rule : globalRules) {
diff --git a/utam-core/src/main/java/utam/core/framework/UtamLogger.java b/utam-core/src/main/java/utam/core/framework/UtamLogger.java
index be60eef4..f62c2361 100644
--- a/utam-core/src/main/java/utam/core/framework/UtamLogger.java
+++ b/utam-core/src/main/java/utam/core/framework/UtamLogger.java
@@ -26,8 +26,11 @@ public class UtamLogger {
    * formatting log messages.
    */
   static {
-    System.setProperty(
-        "java.util.logging.SimpleFormatter.format", "%1$tT %3$s %4$-7s: %5$s %6$s%n");
+    String format = System.getProperty("java.util.logging.SimpleFormatter.format");
+    if (format == null) {
+      System.setProperty(
+          "java.util.logging.SimpleFormatter.format", "%1$tT %3$s %4$-7s: %5$s %6$s%n");
+    }
     UTAM_LOGGER = LoggerFactory.getLogger("utam");
   }