diff --git a/src/lang/catalan.txt b/src/lang/catalan.txt
index ef0f0ef60d..6778475902 100644
--- a/src/lang/catalan.txt
+++ b/src/lang/catalan.txt
@@ -2472,6 +2472,8 @@ STR_NEWGRF_ERROR_CORRUPT_SPRITE                                 :{YELLOW}{STRING
 STR_NEWGRF_ERROR_MULTIPLE_ACTION_8                              :Conté múltiples Accions 8 entrades
 STR_NEWGRF_ERROR_READ_BOUNDS                                    :Lectura després de la fi d'un pseudo-sprite
 STR_NEWGRF_ERROR_MISSING_SPRITES                                :{WHITE}Al joc de gràfics base establert actualment li falten un nombre d'sprites.{}Si us plau actualitza el joc de gràfics base
+STR_NEWGRF_ERROR_GRM_FAILED                                     :Els recursos GRF demanats no estan disponibles
+STR_NEWGRF_ERROR_FORCEFULLY_DISABLED                            :{2:STRING} ha estat desactivat per {4:STRING}
 
 # NewGRF related 'general' warnings
 STR_NEWGRF_POPUP_CAUTION_CAPTION                                :{WHITE}Alerta!
diff --git a/src/lang/dutch.txt b/src/lang/dutch.txt
index 63cfb368a2..9dab169f01 100644
--- a/src/lang/dutch.txt
+++ b/src/lang/dutch.txt
@@ -2471,6 +2471,8 @@ STR_NEWGRF_ERROR_CORRUPT_SPRITE                                 :{YELLOW}{STRING
 STR_NEWGRF_ERROR_MULTIPLE_ACTION_8                              :Bevat meerdere 'Action 8'-elementen
 STR_NEWGRF_ERROR_READ_BOUNDS                                    :Lees voorbij einde van pseudo-sprite
 STR_NEWGRF_ERROR_MISSING_SPRITES                                :{WHITE}De huidige basis graphics-set mist een aantal sprites..{}Werk de graphics-set bij aub
+STR_NEWGRF_ERROR_GRM_FAILED                                     :Gevraagde GRF middelen niet beschikbaar
+STR_NEWGRF_ERROR_FORCEFULLY_DISABLED                            :{2:STRING} is uitgeschakeld door {4:STRING}
 
 # NewGRF related 'general' warnings
 STR_NEWGRF_POPUP_CAUTION_CAPTION                                :{WHITE}Waarschuwing!