diff --git a/src/Win/ProcMutex.cpp b/src/Win/ProcMutex.cpp
index 403d341..582323e 100644
--- a/src/Win/ProcMutex.cpp
+++ b/src/Win/ProcMutex.cpp
@@ -1,5 +1,4 @@
 #include<hgl/proc/ProcMutex.h>
-#include<windows.h>
 
 namespace hgl
 {