diff --git a/src/lang/english.txt b/src/lang/english.txt
--- a/src/lang/english.txt
+++ b/src/lang/english.txt
@@ -2325,6 +2325,7 @@ STR_NEWGRF_ERROR_MSG_INFO               
 STR_NEWGRF_ERROR_MSG_WARNING                                    :{RED}Warning: {SILVER}{RAW_STRING}
 STR_NEWGRF_ERROR_MSG_ERROR                                      :{RED}Error: {SILVER}{RAW_STRING}
 STR_NEWGRF_ERROR_MSG_FATAL                                      :{RED}Fatal: {SILVER}{RAW_STRING}
+STR_NEWGRF_ERROR_FATAL_POPUP                                    :{WHITE}A fatal NewGRF error has occurred: {}{STRING5}
 STR_NEWGRF_ERROR_VERSION_NUMBER                                 :{1:STRING1} will not work with the TTDPatch version reported by OpenTTD.
 STR_NEWGRF_ERROR_DOS_OR_WINDOWS                                 :{1:STRING1} is for the {STRING1} version of TTD.
 STR_NEWGRF_ERROR_UNSET_SWITCH                                   :{1:STRING1} is designed to be used with {STRING1}