diff --git a/src/filterSample/count.cc b/src/filterSample/count.cc
index f1cea02..84a2ff7 100644
--- a/src/filterSample/count.cc
+++ b/src/filterSample/count.cc
@@ -1,10 +1,11 @@
 #include <string>
+#include <thread>
 #include "count.hh"
 #include "opencv2/opencv.hpp"
 
 void* Count::operator()(void* para)
 {
-  static int count = 1;
+  static __thread int count = 1;
   cv::Mat* mat = (cv::Mat*)para;
 
   if (mat == nullptr)