diff --git a/src/xtd.core.native.win32/src/xtd/native/win32/named_semaphore.cpp b/src/xtd.core.native.win32/src/xtd/native/win32/named_semaphore.cpp
index 927858e498f..e6dedf68a65 100644
--- a/src/xtd.core.native.win32/src/xtd/native/win32/named_semaphore.cpp
+++ b/src/xtd.core.native.win32/src/xtd/native/win32/named_semaphore.cpp
@@ -1,7 +1,7 @@
 #define UNICODE
 #define __XTD_CORE_NATIVE_LIBRARY__
 #include <xtd/native/named_semaphore>
-#include "../../../../include/xtd/native/win32/strings.h"
+#include "../../../../include/xtd/native/win32/strings.hpp"
 #undef __XTD_CORE_NATIVE_LIBRARY__
 #include <Windows.h>
 #undef max