diff --git a/Telegram/SourceFiles/data/data_document_resolver.cpp b/Telegram/SourceFiles/data/data_document_resolver.cpp
index 575d695cf99254..4c901daa24eb05 100644
--- a/Telegram/SourceFiles/data/data_document_resolver.cpp
+++ b/Telegram/SourceFiles/data/data_document_resolver.cpp
@@ -42,6 +42,8 @@ namespace {
 base::options::toggle OptionExternalVideoPlayer({
 	.id = kOptionExternalVideoPlayer,
 	.name = "External video player",
+	.description = "Use system video player instead of the internal one. "
+		"This disabes video playback in messages.",
 });
 
 void ConfirmDontWarnBox(