diff --git a/src/lang/english.txt b/src/lang/english.txt
--- a/src/lang/english.txt
+++ b/src/lang/english.txt
@@ -2890,6 +2890,9 @@ STR_NEWGRF_INVALID_CARGO_QUANTITY       
 STR_NEWGRF_INVALID_ENGINE                                       :<invalid vehicle model>
 STR_NEWGRF_INVALID_INDUSTRYTYPE                                 :<invalid industry>
 
+# Placeholders for other invalid stuff, e.g. vehicles that have gone (Game Script).
+STR_INVALID_VEHICLE                                             :<invalid vehicle>
+
 # NewGRF scanning window
 STR_NEWGRF_SCAN_CAPTION                                         :{WHITE}Scanning NewGRFs
 STR_NEWGRF_SCAN_MESSAGE                                         :{BLACK}Scanning NewGRFs. Depending on the amount this can take a while...