diff --git a/Xwt.Gtk/Xwt.GtkBackend/BoxBackendGtk2.cs b/Xwt.Gtk/Xwt.GtkBackend/BoxBackendGtk2.cs
index 9f12f4c16..fd4ccb848 100644
--- a/Xwt.Gtk/Xwt.GtkBackend/BoxBackendGtk2.cs
+++ b/Xwt.Gtk/Xwt.GtkBackend/BoxBackendGtk2.cs
@@ -24,6 +24,7 @@
 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 // THE SOFTWARE.
 using System;
+using System.Linq;
 
 namespace Xwt.GtkBackend
 {
@@ -34,6 +35,13 @@ public void QueueResizeIfRequired()
 			if (!IsReallocating)
 				QueueResize ();
 		}
+
+		protected override void OnSizeRequested (ref Gtk.Requisition requisition)
+		{
+			base.OnSizeRequested (ref requisition);
+			foreach (var c in children.Keys.ToArray ())
+				c.SizeRequest ();
+		}
 	}
 }