diff --git a/code/ryzom/client/src/interface_v3/group_map.cpp b/code/ryzom/client/src/interface_v3/group_map.cpp
index dd5e5ae20..a7f326220 100644
--- a/code/ryzom/client/src/interface_v3/group_map.cpp
+++ b/code/ryzom/client/src/interface_v3/group_map.cpp
@@ -2472,7 +2472,8 @@ void CGroupMap::updateMatchedLandmarks()
 		std::vector<std::pair<string,string> > params;
 		params.clear();
 		params.push_back(std::pair<string,string>("id", toString("lm%d", k)));
-		params.push_back(std::pair<string,string>("tooltip", _MatchedLandmarks[k].Title.toUtf8()));
+		// ctrl base expects utf8 string to start with "u:"
+		params.push_back(std::pair<string,string>("tooltip", "u:" + _MatchedLandmarks[k].Title.toUtf8()));
 		params.push_back(std::pair<string,string>("index", toString(k)));
 
 		CInterfaceGroup *g = CWidgetManager::getInstance()->getParser()->createGroupInstance("lm_search_result", pL->getId(), params);
@@ -2680,7 +2681,7 @@ void CGroupMap::setLandmarkFilter(const std::string &s)
 	if (!s.empty()) {
 		ucstring ucs;
 		ucs.fromUtf8(s);
-		splitUCString(toLower(s), ucstring(" "), _LandmarkFilter);
+		splitUCString(toLower(ucs), ucstring(" "), _LandmarkFilter);
 	}
 
 	// recreate landmarks