diff --git a/Telegram/SourceFiles/ffmpeg/ffmpeg_utility.cpp b/Telegram/SourceFiles/ffmpeg/ffmpeg_utility.cpp
index 378d9b4d1f..95cefeffc6 100644
--- a/Telegram/SourceFiles/ffmpeg/ffmpeg_utility.cpp
+++ b/Telegram/SourceFiles/ffmpeg/ffmpeg_utility.cpp
@@ -522,7 +522,7 @@ AVRational ValidateAspectRatio(AVRational aspect) {
 QSize CorrectByAspect(QSize size, AVRational aspect) {
 	Expects(IsValidAspectRatio(aspect));
 
-	return QSize(size.width() * aspect.num / aspect.den, size.height());
+	return QSize(size.width() * av_q2d(aspect), size.height());
 }
 
 bool RotationSwapWidthHeight(int rotation) {