diff --git a/gtk/gtkmisc.h b/gtk/gtkmisc.h
index 94451135ab..6e34f9ec35 100644
--- a/gtk/gtkmisc.h
+++ b/gtk/gtkmisc.h
@@ -53,11 +53,11 @@ struct _GtkMisc
 {
   GtkWidget widget;
   
-  gfloat xalign;
-  gfloat yalign;
+  gfloat GSEAL (xalign);
+  gfloat GSEAL (yalign);
   
-  guint16 xpad;
-  guint16 ypad;
+  guint16 GSEAL (xpad);
+  guint16 GSEAL (ypad);
 };
 
 struct _GtkMiscClass