Index: gtkhid-cairo.c
===================================================================
--- gtkhid-cairo.c	(revision 17269)
+++ gtkhid-cairo.c	(revision 17270)
@@ -593,6 +593,7 @@
 			break;
 
 		case PCB_HID_COMP_POSITIVE:
+		case PCB_HID_COMP_POSITIVE_XOR:
 			//priv->clip_color.pixel = 1;
 			cairo_set_operator(priv->cr, CAIRO_OPERATOR_SOURCE);
 			break;