diff --git a/main/linux-postmarketos-stable/APKBUILD b/main/linux-postmarketos-stable/APKBUILD
index 88ef86600..3e0ade555 100644
--- a/main/linux-postmarketos-stable/APKBUILD
+++ b/main/linux-postmarketos-stable/APKBUILD
@@ -1,3 +1,6 @@
+# NOTE: This kernel is obsolete. See https://gitlab.com/postmarketOS/pmaports/-/issues/464
+# It is only kept until nokia-n900 has been migrated to linux-lts or a custom kernel.
+
 _flavor=postmarketos-stable
 _hash="7b6fbfd899b4133e4f789843e5967beb139ec4d2"
 _config="config-${_flavor}.${CARCH}"
@@ -11,7 +14,7 @@ case $pkgver in
 esac
 pkgrel=2
 
-arch="x86_64 armhf armv7 aarch64"
+arch="armv7"
 pkgdesc="Linux for pmOS supported chipsets (stable)"
 url="https://kernel.org/"
 depends=""