diff --git a/.idea/misc.xml b/.idea/misc.xml
index fbb68289..5d199810 100644
--- a/.idea/misc.xml
+++ b/.idea/misc.xml
@@ -37,7 +37,7 @@
     <ConfirmationsSetting value="0" id="Add" />
     <ConfirmationsSetting value="0" id="Remove" />
   </component>
-  <component name="ProjectRootManager" version="2" languageLevel="JDK_1_8" default="true" assert-keyword="true" jdk-15="true" project-jdk-name="1.8" project-jdk-type="JavaSDK">
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_1_7" default="true" assert-keyword="true" jdk-15="true" project-jdk-name="1.8" project-jdk-type="JavaSDK">
     <output url="file://$PROJECT_DIR$/build/classes" />
   </component>
   <component name="ProjectType">
diff --git a/Aria/src/main/java/com/arialyy/aria/core/task/SingleThreadTask.java b/Aria/src/main/java/com/arialyy/aria/core/task/SingleThreadTask.java
index 317b9da1..d09e1ed7 100644
--- a/Aria/src/main/java/com/arialyy/aria/core/task/SingleThreadTask.java
+++ b/Aria/src/main/java/com/arialyy/aria/core/task/SingleThreadTask.java
@@ -82,7 +82,7 @@ final class SingleThreadTask implements Runnable {
       is = conn.getInputStream();
       //创建可设置位置的文件
       BufferedRandomAccessFile file =
-          new BufferedRandomAccessFile(mConfigEntity.TEMP_FILE, "rwd", 8192);
+          new BufferedRandomAccessFile(mConfigEntity.TEMP_FILE, "rwd", BUF_SIZE);
       //设置文件长度
       file.seek(mConfigEntity.START_LOCATION);