diff --git a/app/languages/definitions/Vietnamese.yml b/app/languages/definitions/Vietnamese.yml
index 73eb2c8f..b3b2da36 100644
--- a/app/languages/definitions/Vietnamese.yml
+++ b/app/languages/definitions/Vietnamese.yml
@@ -1,6 +1,7 @@
 locale: vi-VN
 currency: ₫
 dictionaryFile: vi-utf8.csv
+abcString: abc
 layout:
   - [SPECIAL] # 0
   - [PUNCTUATION] # 1