Index: uspace/lib/gui/button.c
===================================================================
--- uspace/lib/gui/button.c	(revision 4fff3c7d31249ac9235b574b27bd61512b9907e4)
+++ uspace/lib/gui/button.c	(revision d59718e246e2f30ad97e0364fac7e75455fcb7d1)
@@ -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,