diff --git a/dev-libs/cereal/cereal-1.3.2-r2.ebuild b/dev-libs/cereal/cereal-1.3.2-r2.ebuild
index fc93b8a19e0d4..cf7ba0429ff6e 100644
--- a/dev-libs/cereal/cereal-1.3.2-r2.ebuild
+++ b/dev-libs/cereal/cereal-1.3.2-r2.ebuild
@@ -1,4 +1,4 @@
-# Copyright 1999-2024 Gentoo Authors
+# Copyright 1999-2026 Gentoo Authors
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI=8
@@ -20,7 +20,7 @@ DEPEND="dev-libs/rapidjson"
 
 src_prepare() {
 	if ! use doc ; then
-		sed -i -e '/add_subdirectory(doc/d' CMakeLists.txt || die
+		cmake_comment_add_subdirectory doc
 	fi
 
 	# remove bundled rapidjson