diff --git a/gtk/gtkrange.c b/gtk/gtkrange.c
index d10f3bd14d..8bdc93a4e5 100644
--- a/gtk/gtkrange.c
+++ b/gtk/gtkrange.c
@@ -1683,6 +1683,8 @@ update_trough_state (GtkRange *range)
 
   if (priv->grab_location == priv->trough_widget)
     state |= GTK_STATE_FLAG_ACTIVE;
+
+  gtk_widget_set_state_flags (priv->trough_widget, state, TRUE);
 }
 
 static void