diff --git a/gtk/gtkspinbutton.c b/gtk/gtkspinbutton.c
index bbe132ff4c..caa24b2806 100644
--- a/gtk/gtkspinbutton.c
+++ b/gtk/gtkspinbutton.c
@@ -143,13 +143,14 @@
 
 struct _GtkSpinButtonPrivate
 {
-  GtkSpinButtonUpdatePolicy update_policy;
   GtkAdjustment *adjustment;
 
   GdkWindow     *panel;
 
   guint32        timer;
 
+  GtkSpinButtonUpdatePolicy update_policy;
+
   gdouble        climb_rate;
   gdouble        timer_step;