diff --git a/demos/gtk-demo/glarea.c b/demos/gtk-demo/glarea.c
index 715b06774a..b51e4ae1fe 100644
--- a/demos/gtk-demo/glarea.c
+++ b/demos/gtk-demo/glarea.c
@@ -333,7 +333,7 @@ create_axis_slider (int axis)
   GtkAdjustment *adj;
   const char *text;
 
-  box = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, FALSE);
+  box = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 0);
 
   switch (axis)
     {