Index: uspace/lib/gui/button.c
===================================================================
--- uspace/lib/gui/button.c	(revision 09ab0a9afc9379f1604c0fd75cac2d9287ba022c)
+++ uspace/lib/gui/button.c	(revision 59ff52ddecc1a8fae7d8227c3d89aba32776e065)
@@ -61,4 +61,5 @@
 	drawctx_init(&drawctx, surface);
 
+	drawctx_set_compose(&drawctx, compose_over);
 	drawctx_set_source(&drawctx, &btn->background);
 	drawctx_transfer(&drawctx, widget->hpos, widget->vpos,