diff --git a/src/lang/welsh.txt b/src/lang/welsh.txt
--- a/src/lang/welsh.txt
+++ b/src/lang/welsh.txt
@@ -1803,6 +1803,7 @@ STR_CHEAT_CHANGE_DATE_QUERY_CAPT        
 STR_CHEAT_SETUP_PROD                                            :{LTBLUE}Galluogi newid graddfeydd cynhyrchu: {ORANGE}{STRING}
 
 # Livery window
+STR_LIVERY_CAPTION                                              :{WHITE}Cynllun Lliw Newydd
 
 STR_LIVERY_GENERAL_TOOLTIP                                      :{BLACK}Dangos cynllun lliw cyffredinol
 STR_LIVERY_TRAIN_TOOLTIP                                        :{BLACK}Dangos cynllun lliw trenau