diff --git a/scene/gui/flow_container.cpp b/scene/gui/flow_container.cpp
index ceffd9d103d..f77d66fe98c 100644
--- a/scene/gui/flow_container.cpp
+++ b/scene/gui/flow_container.cpp
@@ -57,7 +57,7 @@ void FlowContainer::_resort() {
 	int line_height = 0;
 	int line_length = 0;
 	float line_stretch_ratio_total = 0;
-	int current_container_size = vertical ? get_rect().size.y : get_rect().size.x;
+	int current_container_size = vertical ? get_size().y : get_size().x;
 	int children_in_current_line = 0;
 	Control *last_child = nullptr;