diff --git a/crates/egui/src/ui.rs b/crates/egui/src/ui.rs
index 7e180a8f..ca024a9c 100644
--- a/crates/egui/src/ui.rs
+++ b/crates/egui/src/ui.rs
@@ -225,10 +225,11 @@ impl Ui {
         }
 
         debug_assert!(!max_rect.any_nan());
-        let next_auto_id_source = Id::new(self.next_auto_id_source).with("child").value();
+        let new_id = self.id.with(id_source);
+        let next_auto_id_source = new_id.with(self.next_auto_id_source).value();
+
         self.next_auto_id_source = self.next_auto_id_source.wrapping_add(1);
 
-        let new_id = self.id.with(id_source);
         let placer = Placer::new(max_rect, layout);
         let ui_stack = UiStack {
             id: new_id,