diff --git a/build.subr b/build.subr
index 46fc61b..b695429 100644
--- a/build.subr
+++ b/build.subr
@@ -248,7 +248,7 @@ parse_with_pkg_name() {
 			[ -z "${PKG_FNAME}" ] && PKG_FNAME=${PKG_URL##*/};
 			[ -z "${PKG_SUBDIR}" ] && PKG_SUBDIR=${PKG_FNAME%%.tar*};
 			[ -n "${PKG_ENV_VARS_EXTRA}" ] && export ${PKG_ENV_VARS_EXTRA};
-			return 0;
+			export PKG_PREFIX=$(get_var_unsafe PREFIX_LVL${PKG_LVL}); return 0;
 		fi; shift;
 	done; return 1;
 };
diff --git a/pkg.build b/pkg.build
index dee4837..e61ac95 100644
--- a/pkg.build
+++ b/pkg.build
@@ -41,8 +41,11 @@ if ! is_build_script_done patch; then
 	fi;
 	[ -x ${PKG_SUBDIR}/configure ] &&			\
 		cp portage/config.cache ${PKG_BUILD_DIR}/;
-	[ ${PKG_LIBTOOL_MIDIPIX:-0} -eq 1 ] &&			\
+	if [ ${PKG_LIBTOOL_MIDIPIX:-0} -eq 1 ]; then
 		cp portage/libtool.midipix ${PKG_SUBDIR}/;
+		sed -i.orig -e "/^libdir=/s/libdir='/libdir='\$PKG_PREFIX\//"\
+			${PKG_SUBDIR}/libtool.midipix;
+	fi;
 	set_build_script_done patch -configure;
 fi;
 cd ${PKG_BUILD_DIR};