diff --git a/code/ryzom/tools/client/ryzom_installer/src/archive.cpp b/code/ryzom/tools/client/ryzom_installer/src/archive.cpp
index 10caa7262..425e4f379 100644
--- a/code/ryzom/tools/client/ryzom_installer/src/archive.cpp
+++ b/code/ryzom/tools/client/ryzom_installer/src/archive.cpp
@@ -32,7 +32,9 @@
 
 #include <sys/stat.h>
 
+#ifdef Q_OS_WIN
 #include <Windows.h>
+#endif
 
 #ifndef FILE_ATTRIBUTE_READONLY
 #define FILE_ATTRIBUTE_READONLY            0x1