Index: Makefile
===================================================================
--- Makefile	(revision 430749)
+++ Makefile	(working copy)
@@ -14,6 +14,7 @@
 BUILD_DEPENDS=	alpng>=1.3:graphics/alpng
 LIB_DEPENDS=	liballeg.so:devel/allegro \
 		libogg.so:audio/libogg \
+		libpng.so:graphics/png \
 		libvorbis.so:audio/libvorbis
 
 DESKTOP_ENTRIES="${PORTNAME}" \