diff --git a/ui/image/image_prepare.cpp b/ui/image/image_prepare.cpp
index da8bc33..83900f5 100644
--- a/ui/image/image_prepare.cpp
+++ b/ui/image/image_prepare.cpp
@@ -1011,6 +1011,10 @@ QImage Round(
 		return std::move(image);
 	}
 
+	image = std::move(image).convertToFormat(
+		QImage::Format_ARGB32_Premultiplied);
+	Assert(!image.isNull());
+
 	// We need to detach image first (if it is shared), before we
 	// count some offsets using QImage::bytesPerLine etc, because
 	// bytesPerLine may change on detach, this leads to crashes:
@@ -1068,10 +1072,6 @@ QImage Round(
 	}
 	Assert(!image.isNull());
 
-	image = std::move(image).convertToFormat(
-		QImage::Format_ARGB32_Premultiplied);
-	Assert(!image.isNull());
-
 	const auto masks = CornersMask(radius);
 	return Round(std::move(image), masks, corners, target);
 }