--- rng-tools-5.ebuild.orig	2015-07-20 18:44:20.331455397 -0400
+++ rng-tools-5.ebuild	2015-07-21 11:32:06.185859039 -0400
@@ -21,6 +21,15 @@
 	selinux? ( sec-policy/selinux-rngd )"
 
 src_prepare() {
+	local manpage_wm_default=""
+
+	# The default watermark fill size is reported incorrectly in the manpage.
+	# See bug #555094.
+	manpage_wm_default+=". By default, this value is set to 75% of "
+	manpage_wm_default+="the entropy pool size or 2048 bits if the "
+	manpage_wm_default+="entropy pool size couldn't be determined."
+	sed -i -e "s/ (default: 2048)./${manpage_wm_default}/" rngd.8.in || die
+
 	echo 'bin_PROGRAMS = randstat' >> contrib/Makefile.am
 	epatch "${FILESDIR}"/test-for-argp.patch\
 		"${FILESDIR}"/${P}-fix-textrels-on-PIC-x86.patch