diff --git a/games-fps/quakeforge/quakeforge-0.7.2_p20210722-r1.ebuild b/games-fps/quakeforge/quakeforge-0.7.2_p20210722-r1.ebuild
index ec5f4c092af3f..7bdc0b3128071 100644
--- a/games-fps/quakeforge/quakeforge-0.7.2_p20210722-r1.ebuild
+++ b/games-fps/quakeforge/quakeforge-0.7.2_p20210722-r1.ebuild
@@ -69,6 +69,7 @@ src_prepare() {
 
 src_configure() {
 	filter-lto #858755
+	unset YACC #884287
 
 	qf_client() {
 		echo $(usex client $(use_enable ${1}) --disable-${1})
diff --git a/games-fps/quakeforge/quakeforge-9999.ebuild b/games-fps/quakeforge/quakeforge-9999.ebuild
index dd9873235d896..b01e565bec437 100644
--- a/games-fps/quakeforge/quakeforge-9999.ebuild
+++ b/games-fps/quakeforge/quakeforge-9999.ebuild
@@ -71,6 +71,7 @@ src_prepare() {
 
 src_configure() {
 	filter-lto #858755
+	unset YACC #884287
 
 	qf_client() {
 		usex client $(use_enable ${1}) --disable-${1}