diff --git a/libs/ui/source/label.cpp b/libs/ui/source/label.cpp
index c9af50a5..dfd5a724 100644
--- a/libs/ui/source/label.cpp
+++ b/libs/ui/source/label.cpp
@@ -535,7 +535,7 @@ namespace psemek::ui
 			// hardcode font height as min line height
 			bbox[1] = {0.f, 1.f * font_height};
 			for (std::size_t i = lines[l].begin; i < lines[l].end; ++i)
-				bbox |= items[i].position;
+				bbox[0] |= items[i].position[0];
 			line_bbox[l] = bbox;
 		}