diff --git a/wrapper/wrapper-plug.c b/wrapper/wrapper-plug.c
index 6832a35..ed3da29 100644
--- a/wrapper/wrapper-plug.c
+++ b/wrapper/wrapper-plug.c
@@ -223,7 +223,7 @@ wrapper_plug_draw (GtkWidget *widget,
     {
       alpha = gtk_widget_is_composited (GTK_WIDGET (plug)) ? plug->background_alpha : 1.00;
 
-      if (alpha < 1.00 || plug->background_color != NULL)
+      if (alpha <= 1.00 || plug->background_color != NULL)
         {
           cairo_set_operator (cr, CAIRO_OPERATOR_SOURCE);