diff --git a/manager/src/main/java/org/apache/hertzbeat/manager/config/ConfigInitializer.java b/manager/src/main/java/org/apache/hertzbeat/manager/config/ConfigInitializer.java
index a571e6bff93..3837a76d0a9 100644
--- a/manager/src/main/java/org/apache/hertzbeat/manager/config/ConfigInitializer.java
+++ b/manager/src/main/java/org/apache/hertzbeat/manager/config/ConfigInitializer.java
@@ -91,7 +91,7 @@ public void initConfig() {
                     .setDateFormat(simpleDateFormat);
         } else {
             // init system config data
-            systemConfig = SystemConfig.builder().timeZoneId(TimeZone.getDefault().getID())
+            systemConfig = SystemConfig.builder().timeZoneId(TimeZone.getDefault().getID()).theme("default")
                                    .locale(Locale.getDefault().getLanguage() + CommonConstants.LOCALE_SEPARATOR
                                                    + Locale.getDefault().getCountry())
                                    .build();