diff --git a/website/src/locales/vi.json b/website/src/locales/vi.json
index f93e94e0a..0ed3fd07c 100644
--- a/website/src/locales/vi.json
+++ b/website/src/locales/vi.json
@@ -324,6 +324,7 @@
             "bgMountains": "BGMountains",
             "usgs": "USGS",
             "bikerouterGravel": "bikerouter.de Gravel",
+            "openRailwayMap": "OpenRailwayMap",
             "cyclOSMlite": "CyclOSM Lite",
             "swisstopoSlope": "swisstopo Slope",
             "swisstopoHiking": "swisstopo Hiking",