diff --git a/src/lang/luxembourgish.txt b/src/lang/luxembourgish.txt
--- a/src/lang/luxembourgish.txt
+++ b/src/lang/luxembourgish.txt
@@ -2606,6 +2606,8 @@ STR_LINKGRAPH_LEGEND_UNUSED             
 STR_LINKGRAPH_LEGEND_SATURATED                                  :{TINY_FONT}{BLACK}gesättegt
 STR_LINKGRAPH_LEGEND_OVERLOADED                                 :{TINY_FONT}{BLACK}iwwerlaascht
 
+# Linkgraph tooltip
+
 # Base for station construction window(s)
 STR_STATION_BUILD_COVERAGE_AREA_TITLE                           :{BLACK}Reechwäit markéieren
 STR_STATION_BUILD_COVERAGE_OFF                                  :{BLACK}Aus