1 files changed, 1 insertions, 1 deletions
diff --git a/gtk/gtkviewport.h b/gtk/gtkviewport.h
index d56d728d6d..a108f4731b 100644
--- a/gtk/gtkviewport.h
+++ b/gtk/gtkviewport.h
@@ -44,7 +44,7 @@ struct _GtkViewport
 {
   GtkBin bin;
 
-  guint shadow_type;
+  GtkShadowType shadow_type;
   GdkWindow *view_window;
   GdkWindow *bin_window;
   GtkAdjustment *hadjustment;