--- imapfilter-2.5.7.ebuild	2014-12-19 04:36:06.000000000 +0100
+++ imapfilter-2.5.7.ebuild	2015-07-07 16:29:45.067936731 +0200
@@ -22,7 +22,7 @@
 DOCS="AUTHORS NEWS README samples/*"
 
 src_prepare() {
-	sed -i -e "/^PREFIX/s:/local::" \
+	sed -i -e "/^PREFIX/s:/usr/local:${EPREFIX}/usr:" \
 		-e "/^MANDIR/s:man:share/man:" \
 		-e "/^CFLAGS/s:CFLAGS =:CFLAGS +=:" \
 		-e "/^CFLAGS/s/-O//" \