--- kismet-2004.10.1.ebuild	2004-10-26 18:07:39.925267990 +0000
+++ kismet-2004.10.1-r1.ebuild	2004-10-26 15:35:45.000000000 +0000
@@ -48,16 +48,18 @@
 }
 
 src_compile() {
+	APPENDIX=""
 	if use ethereal
 	then
 		cd ${WORKDIR}/ethereal-${ETHEREAL_VERSION}/wiretap
 		econf || die "wiretap econf failed"
 		emake || die "wiretap emake failed"
 		cd ${S}
+		APPENDIX="=${WORKDIR}/ethereal-${ETHEREAL_VERSION}"
 	fi
 
 	econf \
-		`use_with ethereal ethereal=${WORKDIR}/ethereal-${ETHEREAL_VERSION}` \
+		`use_with ethereal ethereal${APPENDIX}` \
 		|| die "econf failed"
 
 	emake dep || die "emake dep failed"