diff --git a/Example/Logan-Android/logan/src/main/java/com/dianping/logan/LoganThread.java b/Example/Logan-Android/logan/src/main/java/com/dianping/logan/LoganThread.java
index 2a4f625..8d8b591 100644
--- a/Example/Logan-Android/logan/src/main/java/com/dianping/logan/LoganThread.java
+++ b/Example/Logan-Android/logan/src/main/java/com/dianping/logan/LoganThread.java
@@ -48,7 +48,7 @@ class LoganThread extends Thread {
     private volatile boolean mIsRun = true;
 
     private long mCurrentDay;
-    private boolean mIsWorking;
+    private volatile boolean mIsWorking;
     private File mFileDirectory;
     private boolean mIsSDCard;
     private long mLastTime;