diff --git a/Common/FileUtil.cpp b/Common/FileUtil.cpp
index a52941651d..479da535ae 100644
--- a/Common/FileUtil.cpp
+++ b/Common/FileUtil.cpp
@@ -354,7 +354,7 @@ bool Rename(const std::string &srcFilename, const std::string &destFilename)
 {
 	INFO_LOG(COMMON, "Rename: %s --> %s", 
 			srcFilename.c_str(), destFilename.c_str());
-#ifdef UNICODE
+#if defined(_WIN32) && defined(UNICODE)
 	std::wstring srcw = ConvertUTF8ToWString(srcFilename);
 	std::wstring destw = ConvertUTF8ToWString(destFilename);
 	if (_wrename(srcw.c_str(), destw.c_str()) == 0)