diff --git a/src/lang/vietnamese.txt b/src/lang/vietnamese.txt
--- a/src/lang/vietnamese.txt
+++ b/src/lang/vietnamese.txt
@@ -4255,6 +4255,7 @@ STR_TINY_BLACK_STATION                  
 STR_BLACK_STRING                                                :{BLACK}{STRING}
 STR_BLACK_RAW_STRING                                            :{BLACK}{STRING}
 STR_GREEN_STRING                                                :{GREEN}{STRING}
+STR_ORANGE_STRING                                               :{ORANGE}{STRING}
 STR_RED_STRING                                                  :{RED}{STRING}
 STR_WHITE_STRING                                                :{WHITE}{STRING}
 STR_TINY_BLACK_HEIGHT                                           :{TINYFONT}{BLACK}{HEIGHT}