diff --git a/src/lang/norwegian_bokmal.txt b/src/lang/norwegian_bokmal.txt
--- a/src/lang/norwegian_bokmal.txt
+++ b/src/lang/norwegian_bokmal.txt
@@ -2613,6 +2613,8 @@ STR_LINKGRAPH_LEGEND_UNUSED             
 STR_LINKGRAPH_LEGEND_SATURATED                                  :{TINY_FONT}{BLACK}mettet
 STR_LINKGRAPH_LEGEND_OVERLOADED                                 :{TINY_FONT}{BLACK}overbelastet
 
+# Linkgraph tooltip
+
 # Base for station construction window(s)
 STR_STATION_BUILD_COVERAGE_AREA_TITLE                           :{BLACK}Markering av dekningsområde
 STR_STATION_BUILD_COVERAGE_OFF                                  :{BLACK}Av