diff --git a/code/nel/include/nel/net/service.h b/code/nel/include/nel/net/service.h
index bdabb48a1..8b79bdc55 100644
--- a/code/nel/include/nel/net/service.h
+++ b/code/nel/include/nel/net/service.h
@@ -54,7 +54,17 @@ struct HINSTANCE__;
 typedef struct HINSTANCE__ *HINSTANCE;
 
 typedef char CHAR;
+typedef wchar_t WCHAR;
+
 typedef CHAR *LPSTR;
+typedef WCHAR *LPWSTR;
+
+#if defined(UNICODE) || defined(_UNICODE)
+typedef LPWSTR LPTSTR;
+#else
+typedef LPSTR LPTSTR;
+#endif
+
 #endif
 
 namespace NLNET
diff --git a/code/nel/src/3d/driver/direct3d/driver_direct3d.cpp b/code/nel/src/3d/driver/direct3d/driver_direct3d.cpp
index 7a4618683..43d33d081 100644
--- a/code/nel/src/3d/driver/direct3d/driver_direct3d.cpp
+++ b/code/nel/src/3d/driver/direct3d/driver_direct3d.cpp
@@ -1810,7 +1810,7 @@ emptyProc CDriverD3D::getWindowProc()
 
 IDriver::TMessageBoxId CDriverD3D::systemMessageBox (const char* message, const char* title, TMessageBoxType type, TMessageBoxIcon icon)
 {
-	switch (::MessageBoxW (_HWnd, utf8ToWide(message), utf8ToWide(title), ((type==retryCancelType)?MB_RETRYCANCEL:
+	switch (::MessageBoxW(_HWnd, nlUtf8ToWide(message), nlUtf8ToWide(title), ((type == retryCancelType) ? MB_RETRYCANCEL :
 		(type==yesNoCancelType)?MB_YESNOCANCEL:
 		(type==okCancelType)?MB_OKCANCEL:
 		(type==abortRetryIgnoreType)?MB_ABORTRETRYIGNORE:
diff --git a/code/ryzom/client/src/login_xdelta.cpp b/code/ryzom/client/src/login_xdelta.cpp
index c70304dc2..8cb8beaa1 100644
--- a/code/ryzom/client/src/login_xdelta.cpp
+++ b/code/ryzom/client/src/login_xdelta.cpp
@@ -95,7 +95,7 @@ bool CXDPFileReader::init(const std::string &sFilename, sint32 nLowerBound, sint
 	{
 		// First open the file with a normal function
 #ifdef NL_OS_WINDOWS
-		int fd = _wopen(utf8ToWide(sFilename), _O_BINARY | _O_RDONLY);
+		int fd = _wopen(nlUtf8ToWide(sFilename), _O_BINARY | _O_RDONLY);
 #else
 		int fd = open(sFilename.c_str(), O_RDONLY);
 #endif
diff --git a/code/ryzom/client/src/permanent_ban.cpp b/code/ryzom/client/src/permanent_ban.cpp
index dab097c79..5c9cbbb1f 100644
--- a/code/ryzom/client/src/permanent_ban.cpp
+++ b/code/ryzom/client/src/permanent_ban.cpp
@@ -87,9 +87,9 @@ static void setPermanentBanFileMarker(const std::string &path, bool on)
 		{
 			// simply touch a file
 			COFile f(path);
-			#ifdef NL_OS_WINDOWS
-				SetFileAttributesW(utf8ToWide(path), FILE_ATTRIBUTE_HIDDEN|FILE_ATTRIBUTE_SYSTEM);
-			#endif
+#ifdef NL_OS_WINDOWS
+			SetFileAttributesW(nlUtf8ToWide(path), FILE_ATTRIBUTE_HIDDEN | FILE_ATTRIBUTE_SYSTEM);
+#endif
 		}
 		catch(const EStream &e)
 		{