diff --git a/Telegram/SourceFiles/history/view/media/history_view_theme_document.cpp b/Telegram/SourceFiles/history/view/media/history_view_theme_document.cpp
index df4163ebf..76d6fd009 100644
--- a/Telegram/SourceFiles/history/view/media/history_view_theme_document.cpp
+++ b/Telegram/SourceFiles/history/view/media/history_view_theme_document.cpp
@@ -320,6 +320,7 @@ void ThemeDocument::prepareThumbnailFrom(
 			_background,
 			_gradientRotation,
 			_patternOpacity);
+		original.setDevicePixelRatio(cRetinaFactor());
 	}
 	_thumbnail = Ui::PixmapFromImage(std::move(original));
 	_thumbnailGood = good;