diff --git a/code/ryzom/server/src/input_output_service/string_manager.cpp b/code/ryzom/server/src/input_output_service/string_manager.cpp
index 04a5f504d..56a351fea 100644
--- a/code/ryzom/server/src/input_output_service/string_manager.cpp
+++ b/code/ryzom/server/src/input_output_service/string_manager.cpp
@@ -966,7 +966,7 @@ uint32	CStringManager::translateTitle(const std::string  &title, TLanguages lang
 {
 	const std::string colName("name");
 	const CStringManager::CEntityWords &ew = getEntityWords(language, STRING_MANAGER::title);
-	std::string rowName = NLMISC::strlwr(title);
+	std::string rowName = NLMISC::toLower(title);
 	uint32 stringId;
 	stringId = ew.getStringId(rowName, colName);
 
diff --git a/code/ryzom/server/src/input_output_service/string_manager_parser.cpp b/code/ryzom/server/src/input_output_service/string_manager_parser.cpp
index 9ca76ce74..dfa8098a3 100644
--- a/code/ryzom/server/src/input_output_service/string_manager_parser.cpp
+++ b/code/ryzom/server/src/input_output_service/string_manager_parser.cpp
@@ -428,7 +428,7 @@ CStringManager::CEntityWords CStringManager::parseEntityWords(const ucstring &st
 	for (i=1; i<ws.size(); ++i)
 	{
 		// on the first col, we uncapitalize the id
-		ws.setData(i, 0, ucstring(NLMISC::strlwr(ws.getData(i, 0).toString())));
+		ws.setData(i, 0, ucstring(NLMISC::toLower(ws.getData(i, 0).toString())));
 
 		ew._RowInfo.insert(make_pair(ws.getData(i, 0).toString(), i-1));
 		for (uint j=0; j<ws.ColCount; ++j)
@@ -802,7 +802,7 @@ bool CStringManager::parseTag(const CPhrase &phrase, const ucstring &tag, TRepla
 			nlwarning("Error reading tag property in the tag [%s]", tag.toString().c_str());
 			return false;
 		}
-		spec = NLMISC::strlwr(spec);
+		spec = NLMISC::toLower(spec);
 	}
 	else
 		spec = "name";
@@ -1098,7 +1098,7 @@ bool CStringManager::parseParamList(ucstring::const_iterator &it, ucstring::cons
 				nlwarning("Error parsing parameter %u type in param list", count);
 				return false;
 			}
-			type = NLMISC::strlwr(type);
+			type = NLMISC::toLower(type);
 
 			NLMISC::CI18N::skipWhiteSpace(it, last);
 			if (!NLMISC::CI18N::parseLabel(it, last, name))
diff --git a/code/ryzom/tools/leveldesign/mission_compiler_lib/mission_compiler.cpp b/code/ryzom/tools/leveldesign/mission_compiler_lib/mission_compiler.cpp
index 5e54e5298..6e11bd83e 100644
--- a/code/ryzom/tools/leveldesign/mission_compiler_lib/mission_compiler.cpp
+++ b/code/ryzom/tools/leveldesign/mission_compiler_lib/mission_compiler.cpp
@@ -1835,11 +1835,11 @@ void CMissionData::parseMissionHeader(NLLIGO::IPrimitive *prim)
 //	_MissionTitle.init(*this, prim, vs); 
 	_MissionDescriptionRaw = getPropertyArray(prim, "mission_description", false, false);
 //	_MissionDescription.init(*this, prim, vs);
-	_MonoInstance = strlwr(getProperty(prim, "mono_instance", true, false)) == "true";
-	_RunOnce = strlwr(getProperty(prim, "run_only_once", true, false)) == "true";
-	_Replayable = strlwr(getProperty(prim, "replayable", true, false)) == "true";
+	_MonoInstance = toLower(getProperty(prim, "mono_instance", true, false)) == "true";
+	_RunOnce = toLower(getProperty(prim, "run_only_once", true, false)) == "true";
+	_Replayable = toLower(getProperty(prim, "replayable", true, false)) == "true";
 	
-	_NeedValidation = strlwr(getProperty(prim, "need_validation", true, false)) == "true";
+	_NeedValidation = toLower(getProperty(prim, "need_validation", true, false)) == "true";
 	
 	_MissionAutoMenuRaw = getPropertyArray(prim, "phrase_auto_menu", false, false);