diff --git a/mastodon/src/main/res/values-vi-rVN/strings.xml b/mastodon/src/main/res/values-vi-rVN/strings.xml
index f83b2961a..3d8b9e534 100644
--- a/mastodon/src/main/res/values-vi-rVN/strings.xml
+++ b/mastodon/src/main/res/values-vi-rVN/strings.xml
@@ -553,4 +553,6 @@
 	<string name="time_minutes_ago_short">%dp</string>
 	<string name="time_hours_ago_short">%dh</string>
 	<string name="time_days_ago_short">%d ngày</string>
+	<!-- %s is the name of the post language -->
+	<!-- %1$s is the language, %2$s is the name of the translation service -->
 </resources>