diff --git a/devel/avr-gdb/Makefile b/devel/avr-gdb/Makefile
index cadeaf78c331..01b517213b70 100644
--- a/devel/avr-gdb/Makefile
+++ b/devel/avr-gdb/Makefile
@@ -3,7 +3,7 @@
 
 PORTNAME=	gdb
 PORTVERSION=	7.3.1
-PORTREVISION=	3
+PORTREVISION=	4
 CATEGORIES=	devel
 MASTER_SITES=	GNU
 MASTER_SITE_SUBDIR=	gdb
@@ -12,6 +12,7 @@ DISTNAME=	gdb-${PORTVERSION}
 
 MAINTAINER=	joerg@FreeBSD.org
 COMMENT=	GNU GDB for the AVR target
+LIB_DEPENDS=	libexpat.so:${PORTSDIR}/textproc/expat2
 
 USES=		gmake tar:bzip2