diff --git a/code/nel/src/gui/lua_ihm.cpp b/code/nel/src/gui/lua_ihm.cpp
index 4a51d221f..b36b9cca8 100644
--- a/code/nel/src/gui/lua_ihm.cpp
+++ b/code/nel/src/gui/lua_ihm.cpp
@@ -115,7 +115,7 @@ namespace NLGUI
 		{
 		#if !FINAL_VERSION
 			#ifdef NL_OS_WINDOWS
-				ShellExecuteW(NULL, utf8ToWide(operation), utf8ToWide(fileName), utf8ToWide(parameters), NULL, SW_SHOWDEFAULT);
+				ShellExecuteW(NULL, nlUtf8ToWide(operation), nlUtf8ToWide(fileName), nlUtf8ToWide(parameters), NULL, SW_SHOWDEFAULT);
 			#endif
 		#endif
 		}
diff --git a/code/nel/tools/3d/plugin_max/nel_mesh_lib/export_misc.cpp b/code/nel/tools/3d/plugin_max/nel_mesh_lib/export_misc.cpp
index b47b05e84..7ef95260d 100644
--- a/code/nel/tools/3d/plugin_max/nel_mesh_lib/export_misc.cpp
+++ b/code/nel/tools/3d/plugin_max/nel_mesh_lib/export_misc.cpp
@@ -764,7 +764,7 @@ void CExportNel::outputErrorMessage(const std::string &message)
 {
 	if (_ErrorInDialog)
 	{
-		MessageBoxW(_Ip->GetMAXHWnd(), utf8ToWide(message), utf8ToWide(_ErrorTitle), MB_OK|MB_ICONEXCLAMATION);
+		MessageBoxW(_Ip->GetMAXHWnd(), nlUtf8ToWide(message), nlUtf8ToWide(_ErrorTitle), MB_OK|MB_ICONEXCLAMATION);
 	}
 	mprintf(_M("%s\n"), MaxTStrFromUtf8(message).data());
 
@@ -778,7 +778,7 @@ void CExportNel::outputWarningMessage(const std::string &message)
 {
 	if (_ErrorInDialog)
 	{
-		MessageBoxW(_Ip->GetMAXHWnd(), utf8ToWide(message), utf8ToWide(_ErrorTitle), MB_OK|MB_ICONEXCLAMATION);
+		MessageBoxW(_Ip->GetMAXHWnd(), nlUtf8ToWide(message), nlUtf8ToWide(_ErrorTitle), MB_OK|MB_ICONEXCLAMATION);
 	}
 	mprintf(_M("%s\n"), MaxTStrFromUtf8(message).data());