diff --git a/Telegram/SourceFiles/data/data_document.cpp b/Telegram/SourceFiles/data/data_document.cpp
index 7c2a89bf19..06b1da9e6d 100644
--- a/Telegram/SourceFiles/data/data_document.cpp
+++ b/Telegram/SourceFiles/data/data_document.cpp
@@ -1069,14 +1069,11 @@ void DocumentData::checkSticker() {
 			const auto &loc = location(true);
 			if (loc.accessEnable()) {
 				data->image = std::make_unique<Image>(
-					std::make_unique<Images::LocalFileSource>(
-						loc.name(),
-						QByteArray(),
-						"WEBP"));
+					std::make_unique<Images::LocalFileSource>(loc.name()));
 				loc.accessDisable();
 			}
 		} else {
-			auto format = QByteArray("WEBP");
+			auto format = QByteArray();
 			auto image = App::readImage(_data, &format, false);
 			data->image = std::make_unique<Image>(
 				std::make_unique<Images::LocalFileSource>(
diff --git a/Telegram/SourceFiles/ui/image/image_source.h b/Telegram/SourceFiles/ui/image/image_source.h
index 94f92ff6c8..932ab80b34 100644
--- a/Telegram/SourceFiles/ui/image/image_source.h
+++ b/Telegram/SourceFiles/ui/image/image_source.h
@@ -64,10 +64,10 @@ private:
 
 class LocalFileSource : public Source {
 public:
-	LocalFileSource(
+	explicit LocalFileSource(
 		const QString &path,
-		const QByteArray &content,
-		const QByteArray &format,
+		const QByteArray &content = QByteArray(),
+		const QByteArray &format = QByteArray(),
 		QImage &&data = QImage());
 
 	void load(