diff --git a/app/src/main/java/com/github/catvod/spider/Local.java b/app/src/main/java/com/github/catvod/spider/Local.java
index eee98dea..4d1853f5 100644
--- a/app/src/main/java/com/github/catvod/spider/Local.java
+++ b/app/src/main/java/com/github/catvod/spider/Local.java
@@ -106,9 +106,10 @@ public class Local extends Spider {
 
     private List<Sub> getSubs(String path) {
         File file = new File(path);
-        if (file.getParentFile() == null) return Collections.emptyList();
+        File[] files = file.getParentFile() == null ? null : file.getParentFile().listFiles();
+        if (files == null || files.length == 0) return Collections.emptyList();
         List<Sub> subs = new ArrayList<>();
-        for (File f : file.getParentFile().listFiles()) {
+        for (File f : files) {
             String ext = Util.getExt(f.getName());
             if (Util.isSub(ext)) subs.add(Sub.create().name(Util.removeExt(f.getName())).ext(ext).url("file://" + f.getAbsolutePath()));
         }
diff --git a/jar/custom_spider.jar b/jar/custom_spider.jar
index a986f8d1..a327c2d9 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 4812cd87..cabed052 100644
--- a/jar/custom_spider.jar.md5
+++ b/jar/custom_spider.jar.md5
@@ -1 +1 @@
-fd1b4ae6ab532b829b3256e786c03e21
+b65fbd46a646519fea2b594f2faf4138