diff --git a/gtk/gtktooltip.c b/gtk/gtktooltip.c
index 5cff68f6b2..df4fc50ff1 100644
--- a/gtk/gtktooltip.c
+++ b/gtk/gtktooltip.c
@@ -116,7 +116,6 @@ struct _GtkTooltip
   GObject parent_instance;
 
   GtkWidget *window;
-  GtkWidget *alignment;
   GtkWidget *box;
   GtkWidget *image;
   GtkWidget *label;