diff --git a/src/lang/latvian.txt b/src/lang/latvian.txt
--- a/src/lang/latvian.txt
+++ b/src/lang/latvian.txt
@@ -2621,6 +2621,8 @@ STR_LINKGRAPH_LEGEND_UNUSED             
 STR_LINKGRAPH_LEGEND_SATURATED                                  :{TINY_FONT}{BLACK}piesātināts
 STR_LINKGRAPH_LEGEND_OVERLOADED                                 :{TINY_FONT}{BLACK}pārslogots
 
+# Linkgraph tooltip
+
 # Base for station construction window(s)
 STR_STATION_BUILD_COVERAGE_AREA_TITLE                           :{BLACK}Pārklājuma iezīmēšana
 STR_STATION_BUILD_COVERAGE_OFF                                  :{BLACK}Nav