diff --git a/net-p2p/rtorrent/rtorrent-0.9.8-r2.ebuild b/net-p2p/rtorrent/rtorrent-0.9.8-r2.ebuild
index bc460bab122e2..cc07aef717a88 100644
--- a/net-p2p/rtorrent/rtorrent-0.9.8-r2.ebuild
+++ b/net-p2p/rtorrent/rtorrent-0.9.8-r2.ebuild
@@ -3,7 +3,7 @@
 
 EAPI=8
 
-inherit autotools linux-info systemd
+inherit autotools flag-o-matic linux-info systemd
 
 DESCRIPTION="BitTorrent Client using libtorrent"
 HOMEPAGE="https://rakshasa.github.io/rtorrent/"
@@ -56,6 +56,11 @@ src_prepare() {
 }
 
 src_configure() {
+	# -Werror=odr
+	# https://bugs.gentoo.org/861848
+	# https://github.com/rakshasa/rtorrent/issues/1264
+	filter-lto
+
 	default
 
 	# configure needs bash or script bombs out on some null shift, bug #291229
diff --git a/net-p2p/rtorrent/rtorrent-0.9.8-r3.ebuild b/net-p2p/rtorrent/rtorrent-0.9.8-r3.ebuild
index f2faf77326009..955a5c7770a9c 100644
--- a/net-p2p/rtorrent/rtorrent-0.9.8-r3.ebuild
+++ b/net-p2p/rtorrent/rtorrent-0.9.8-r3.ebuild
@@ -1,9 +1,9 @@
-# Copyright 1999-2023 Gentoo Authors
+# Copyright 1999-2024 Gentoo Authors
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI=8
 
-inherit autotools linux-info systemd
+inherit autotools flag-o-matic linux-info systemd
 
 DESCRIPTION="BitTorrent Client using libtorrent"
 HOMEPAGE="https://rakshasa.github.io/rtorrent/"
@@ -57,6 +57,11 @@ src_prepare() {
 }
 
 src_configure() {
+	# -Werror=odr
+	# https://bugs.gentoo.org/861848
+	# https://github.com/rakshasa/rtorrent/issues/1264
+	filter-lto
+
 	# configure needs bash or script bombs out on some null shift, bug #291229
 	CONFIG_SHELL=${BASH} econf \
 		$(use_enable debug) \