diff --git a/src/main/java/com/ilummc/eagletdl/Eaglet.java b/src/main/java/com/ilummc/eagletdl/Eaglet.java
deleted file mode 100644
index 7e000b3..0000000
--- a/src/main/java/com/ilummc/eagletdl/Eaglet.java
+++ /dev/null
@@ -1,22 +0,0 @@
-package com.ilummc.eagletdl;
-
-/**
- * Test class
- */
-public class Eaglet {
-
-    public static void main(String[] args) {
-        //new EagletTask().url("http://sgp-ping.vultr.com/vultr.com.100MB.bin")
-        new EagletTask().url("https://gitee.com/bkm016/TabooLibCloud/raw/master/TabooMenu/TabooMenu.jar")
-                .file("F:\\test.dl")
-                .setThreads(1)
-                .readTimeout(1000)
-                .connectionTimeout(1000)
-                .maxRetry(30)
-                .setOnConnected(event -> System.out.println(event.getContentLength()))
-                .setOnProgress(event -> System.out.println(event.getSpeedFormatted() + " " + event.getPercentageFormatted()))
-                .setOnComplete(event -> System.out.println("Complete"))
-                .start();
-    }
-
-}
diff --git a/src/main/java/com/ilummc/eagletdl/EagletTask.java b/src/main/java/com/ilummc/eagletdl/EagletTask.java
index a37d6b7..9b0c452 100644
--- a/src/main/java/com/ilummc/eagletdl/EagletTask.java
+++ b/src/main/java/com/ilummc/eagletdl/EagletTask.java
@@ -111,7 +111,7 @@ public class EagletTask {
                         long progress = download.getCurrentProgress();
                         // fire a new progress event
                         if (onProgress != null) {
-                            onProgress.handle(new ProgressEvent(progress - last, this, ((double) progress) / Math.max((double) contentLength, 0D)));
+                            onProgress.handle(new ProgressEvent(progress - last < 0 ? 0 : progress - last, this, ((double) progress) / Math.max((double) contentLength, 0D)));
                         }
                         last = progress;
                         // check complete
diff --git a/src/main/java/com/ilummc/eagletdl/SingleThreadDownload.java b/src/main/java/com/ilummc/eagletdl/SingleThreadDownload.java
index 137762d..d03967e 100644
--- a/src/main/java/com/ilummc/eagletdl/SingleThreadDownload.java
+++ b/src/main/java/com/ilummc/eagletdl/SingleThreadDownload.java
@@ -35,8 +35,7 @@ class SingleThreadDownload implements Runnable {
     public void run() {
         byte[] buf = new byte[1024];
         int len = 0;
-        try (BufferedInputStream stream = new BufferedInputStream(connection.getInputStream());
-             BufferedOutputStream outputStream = new BufferedOutputStream(new FileOutputStream(target))) {
+        try (BufferedInputStream stream = new BufferedInputStream(connection.getInputStream()); BufferedOutputStream outputStream = new BufferedOutputStream(new FileOutputStream(target))) {
             while ((len = stream.read(buf)) > 0) {
                 outputStream.write(buf, 0, len);
                 currentProgress += len;
diff --git a/src/main/java/com/ilummc/eagletdl/SplitDownload.java b/src/main/java/com/ilummc/eagletdl/SplitDownload.java
index 6727537..dd17663 100644
--- a/src/main/java/com/ilummc/eagletdl/SplitDownload.java
+++ b/src/main/java/com/ilummc/eagletdl/SplitDownload.java
@@ -80,7 +80,10 @@ class SplitDownload implements Runnable {
                     }
                     complete = true;
                 }
-            } else throw new DoNotSupportMultipleThreadException();
+                file.close();
+            } else {
+                throw new DoNotSupportMultipleThreadException();
+            }
         } catch (Exception e) {
             task.onError.handle(new ErrorEvent(e, task));
             retry++;