diff --git a/myis11/src/IRIS_IS3/SensorIS3.cpp b/myis11/src/IRIS_IS3/SensorIS3.cpp
index bd67f1f..d51d52d 100644
--- a/myis11/src/IRIS_IS3/SensorIS3.cpp
+++ b/myis11/src/IRIS_IS3/SensorIS3.cpp
@@ -5,7 +5,7 @@
 #include "iostream"
 #include "IRIS_Method.h"
 
-#include <string>
+#include <cstring>
 
 static void split(const std::string& s, std::vector<std::string>& sv, char flag)
 {