diff --git a/src/lang/frisian.txt b/src/lang/frisian.txt
--- a/src/lang/frisian.txt
+++ b/src/lang/frisian.txt
@@ -3807,8 +3807,6 @@ STR_TIMETABLE_RESET_LATENESS            
 STR_TIMETABLE_EXPECTED                                          :{BLACK}Ferwachte
 STR_TIMETABLE_SCHEDULED                                         :{BLACK}Pland
 
-STR_TIMETABLE_ARRIVAL_ABBREVIATION                              :A:
-STR_TIMETABLE_DEPARTURE_ABBREVIATION                            :F:
 
 
 # Date window (for timetable)