diff --git a/demo/demo/map.cpp b/demo/demo/map.cpp
index 8e363ee..58490e5 100644
--- a/demo/demo/map.cpp
+++ b/demo/demo/map.cpp
@@ -4,8 +4,6 @@
 #include <stdlib.h>     /* srand, rand */
 #ifdef __linux__
 #include <unistd.h>
-#elif _WIN32
-#include <Windows.h>
 #endif
 
 #include <mutex>
diff --git a/include/tkDNN/ImuOdom.h b/include/tkDNN/ImuOdom.h
index fa870f3..d5429a8 100644
--- a/include/tkDNN/ImuOdom.h
+++ b/include/tkDNN/ImuOdom.h
@@ -7,7 +7,6 @@
 #elif _WIN32
 #define _USE_MATH_DEFINES
 #include <math.h>
-#include <Windows.h>
 #endif 
 
 #include <mutex>
diff --git a/include/tkDNN/Int8BatchStream.h b/include/tkDNN/Int8BatchStream.h
index 7d2cef5..c39a11c 100644
--- a/include/tkDNN/Int8BatchStream.h
+++ b/include/tkDNN/Int8BatchStream.h
@@ -14,8 +14,6 @@
 #include <stdlib.h>
 #ifdef __linux__    
 #include <unistd.h>
-#elif _WIN32
-#include <Windows.h>
 #endif
 
 #include <mutex>