diff --git a/app/src/main/java/com/github/catvod/ali/API.java b/app/src/main/java/com/github/catvod/ali/API.java
index e24c7896..8330dbea 100644
--- a/app/src/main/java/com/github/catvod/ali/API.java
+++ b/app/src/main/java/com/github/catvod/ali/API.java
@@ -288,7 +288,7 @@ public class API {
             } else if (file.getCategory().equals("video") || file.getCategory().equals("audio")) {
                 files.add(file.parent(parent.getName()));
             } else if (Utils.isSub(file.getExt())) {
-                String key = file.removeExt();
+                String key = Utils.removeExt(file.getName());
                 if (!subMap.containsKey(key)) subMap.put(key, new ArrayList<>());
                 subMap.get(key).add(key + "@@@" + file.getExt() + "@@@" + file.getFileId());
             }
diff --git a/app/src/main/java/com/github/catvod/bean/ali/Item.java b/app/src/main/java/com/github/catvod/bean/ali/Item.java
index 763aede4..fef4f306 100644
--- a/app/src/main/java/com/github/catvod/bean/ali/Item.java
+++ b/app/src/main/java/com/github/catvod/bean/ali/Item.java
@@ -85,8 +85,4 @@ public class Item {
     public String getDisplayName() {
         return TextUtils.join(" ", Arrays.asList(getParent(), getName(), getSize())).trim();
     }
-
-    public String removeExt() {
-        return getName().indexOf(".") > 0 ? getName().substring(0, getName().lastIndexOf(".")) : getName();
-    }
 }
diff --git a/app/src/main/java/com/github/catvod/bean/ali/Sorter.java b/app/src/main/java/com/github/catvod/bean/ali/Sorter.java
index 76bd790b..17a1ca54 100644
--- a/app/src/main/java/com/github/catvod/bean/ali/Sorter.java
+++ b/app/src/main/java/com/github/catvod/bean/ali/Sorter.java
@@ -1,5 +1,7 @@
 package com.github.catvod.bean.ali;
 
+import com.github.catvod.utils.Utils;
+
 import java.util.Collections;
 import java.util.Comparator;
 import java.util.List;
@@ -13,7 +15,7 @@ public class Sorter implements Comparator<Item> {
     @Override
     public int compare(Item o1, Item o2) {
         try {
-            return Integer.valueOf(o1.getDisplayName()).compareTo(Integer.valueOf(o2.getDisplayName()));
+            return Integer.valueOf(Utils.removeExt(o1.getDisplayName())).compareTo(Integer.valueOf(Utils.removeExt(o2.getDisplayName())));
         } catch (NumberFormatException e) {
             return o1.getDisplayName().compareToIgnoreCase(o2.getDisplayName());
         }
diff --git a/app/src/main/java/com/github/catvod/spider/WebDAV.java b/app/src/main/java/com/github/catvod/spider/WebDAV.java
index 7aed8daa..10476fca 100644
--- a/app/src/main/java/com/github/catvod/spider/WebDAV.java
+++ b/app/src/main/java/com/github/catvod/spider/WebDAV.java
@@ -52,7 +52,7 @@ public class WebDAV extends Spider {
     }
 
     private String removeExt(DavResource item) {
-        return item.getName().indexOf(".") > 0 ? item.getName().substring(0, item.getName().lastIndexOf(".")) : item.getName();
+        return Utils.removeExt(item.getName());
     }
 
     private static Drive getDrive(String name) {
diff --git a/app/src/main/java/com/github/catvod/utils/Utils.java b/app/src/main/java/com/github/catvod/utils/Utils.java
index 9eac47d9..9fb4c890 100644
--- a/app/src/main/java/com/github/catvod/utils/Utils.java
+++ b/app/src/main/java/com/github/catvod/utils/Utils.java
@@ -70,6 +70,10 @@ public class Utils {
         return src;
     }
 
+    public static String removeExt(String text) {
+        return text.contains(".") ? text.substring(0, text.lastIndexOf(".")) : text;
+    }
+
     public static String substring(String text) {
         return substring(text, 1);
     }
diff --git a/jar/custom_spider.jar b/jar/custom_spider.jar
index 331c2ca5..4d1e4369 100644
Binary files a/jar/custom_spider.jar and b/jar/custom_spider.jar differ
diff --git a/jar/custom_spider.jar.md5 b/jar/custom_spider.jar.md5
index 372ea903..d36ffc88 100644
--- a/jar/custom_spider.jar.md5
+++ b/jar/custom_spider.jar.md5
@@ -1 +1 @@
-dc64f1fe003adcd9916ee38638684376
+d255d424916b37d2329cbfd8dd8b2119