diff --git a/gtk/deprecated/gtktreepopover.c b/gtk/deprecated/gtktreepopover.c
index f2bab158c6..eb39966271 100644
--- a/gtk/deprecated/gtktreepopover.c
+++ b/gtk/deprecated/gtktreepopover.c
@@ -268,6 +268,7 @@ gtk_tree_popover_init (GtkTreePopover *popover)
 
   sw = gtk_scrolled_window_new ();
   gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (sw), GTK_POLICY_NEVER, GTK_POLICY_AUTOMATIC);
+  gtk_scrolled_window_set_propagate_natural_width (GTK_SCROLLED_WINDOW (sw), TRUE);
   gtk_scrolled_window_set_propagate_natural_height (GTK_SCROLLED_WINDOW (sw), TRUE);
   gtk_popover_set_child (GTK_POPOVER (popover), sw);