diff --git a/Telegram/SourceFiles/ui/grouped_layout.cpp b/Telegram/SourceFiles/ui/grouped_layout.cpp
index 1bc06227ef..98af5d901f 100644
--- a/Telegram/SourceFiles/ui/grouped_layout.cpp
+++ b/Telegram/SourceFiles/ui/grouped_layout.cpp
@@ -113,7 +113,7 @@ Layouter::Layouter(
 , _maxHeight(maxWidth)
 , _minWidth(minWidth)
 , _spacing(spacing)
-, _averageRatio(ranges::accumulate(_ratios, 0.) / _count)
+, _averageRatio(ranges::accumulate(_ratios, 1.) / _count)
 , _maxSizeRatio(_maxWidth / float64(_maxHeight)) {
 }