diff --git a/page_widget.c b/page_widget.c
index 5c0f368..af0f572 100644
--- a/page_widget.c
+++ b/page_widget.c
@@ -391,7 +391,7 @@ redraw_rect(ZathuraPage* widget, zathura_rectangle_t* rectangle)
   grect.y = rectangle->y1;
   grect.width = rectangle->x2 - rectangle->x1;
   grect.height = rectangle->y2 - rectangle->y1;
-  gdk_window_invalidate_rect(GTK_WIDGET(widget)->window, &grect, TRUE);
+  gdk_window_invalidate_rect(gtk_widget_get_parent_window(GTK_WIDGET(widget)), &grect, TRUE);
 }
 
 static void
diff --git a/utils.c b/utils.c
index eb96b40..afc88fa 100644
--- a/utils.c
+++ b/utils.c
@@ -263,7 +263,8 @@ recalc_rectangle(zathura_page_t* page, zathura_rectangle_t rectangle)
 void
 set_adjustment(GtkAdjustment* adjustment, gdouble value)
 {
-  gtk_adjustment_set_value(adjustment, MAX(adjustment->lower, MIN(adjustment->upper - adjustment->page_size, value)));
+  gtk_adjustment_set_value(adjustment, MAX(gtk_adjustment_get_lower(adjustment),
+        MIN(gtk_adjustment_get_upper(adjustment) - gtk_adjustment_get_page_size(adjustment), value)));
 }
 
 void