diff --git a/catvod/src/main/java/com/github/catvod/utils/Util.java b/catvod/src/main/java/com/github/catvod/utils/Util.java
index 2bce04819..685374b77 100644
--- a/catvod/src/main/java/com/github/catvod/utils/Util.java
+++ b/catvod/src/main/java/com/github/catvod/utils/Util.java
@@ -14,14 +14,12 @@ import java.io.FileInputStream;
 import java.math.BigInteger;
 import java.security.MessageDigest;
 import java.security.NoSuchAlgorithmException;
-import java.text.DecimalFormat;
 import java.text.SimpleDateFormat;
 import java.util.Formatter;
 
 public class Util {
 
     public static final String CHROME = "Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/116.0.0.0 Safari/537.36";
-    public static final String[] UNITS = new String[]{"bytes", "KB", "MB", "GB", "TB"};
 
     public static String getDeviceId() {
         return Settings.Secure.getString(Init.context().getContentResolver(), Settings.Secure.ANDROID_ID);
@@ -145,10 +143,4 @@ public class Util {
         if (key.equalsIgnoreCase(HttpHeaders.COOKIE)) return HttpHeaders.COOKIE;
         return key;
     }
-
-    public static String size(long size) {
-        if (size <= 0) return "";
-        int group = (int) (Math.log10(size) / Math.log10(1024));
-        return "[" + new DecimalFormat("###0.#").format(size / Math.pow(1024, group)) + " " + UNITS[group] + "] ";
-    }
 }
diff --git a/thunder/src/main/java/com/xunlei/downloadlib/Util.java b/thunder/src/main/java/com/xunlei/downloadlib/Util.java
index 8f182c7e7..5d366ee66 100644
--- a/thunder/src/main/java/com/xunlei/downloadlib/Util.java
+++ b/thunder/src/main/java/com/xunlei/downloadlib/Util.java
@@ -1,5 +1,6 @@
 package com.xunlei.downloadlib;
 
+import java.text.DecimalFormat;
 import java.util.Arrays;
 import java.util.List;
 
@@ -7,9 +8,16 @@ public class Util {
 
     private static final List<String> VIDEO = Arrays.asList("avi", "flv", "mkv", "mov", "mp4", "mpeg", "mpe", "mpg", "wmv");
     private static final List<String> AUDIO = Arrays.asList("aac", "ape", "flac", "mp3", "m4a", "ogg");
+    private static final String[] UNITS = new String[]{"bytes", "KB", "MB", "GB", "TB"};
     private static final long MINIMAL = 30 * 1024 * 1024;
 
     public static boolean isMedia(String ext, long size) {
         return (VIDEO.contains(ext) || AUDIO.contains(ext)) && size > MINIMAL;
     }
+
+    public static String size(long size) {
+        if (size <= 0) return "";
+        int group = (int) (Math.log10(size) / Math.log10(1024));
+        return "[" + new DecimalFormat("###0.#").format(size / Math.pow(1024, group)) + " " + UNITS[group] + "] ";
+    }
 }
diff --git a/thunder/src/main/java/com/xunlei/downloadlib/parameter/TorrentFileInfo.java b/thunder/src/main/java/com/xunlei/downloadlib/parameter/TorrentFileInfo.java
index 9601611e9..73dccb7c4 100644
--- a/thunder/src/main/java/com/xunlei/downloadlib/parameter/TorrentFileInfo.java
+++ b/thunder/src/main/java/com/xunlei/downloadlib/parameter/TorrentFileInfo.java
@@ -2,7 +2,7 @@ package com.xunlei.downloadlib.parameter;
 
 import android.text.TextUtils;
 
-import com.github.catvod.utils.Util;
+import com.xunlei.downloadlib.Util;
 
 import java.io.File;
 import java.util.Collections;