diff --git a/eclass/systemd.eclass b/eclass/systemd.eclass
index 97ecf0786aef2..09ea71bbfdc5b 100644
--- a/eclass/systemd.eclass
+++ b/eclass/systemd.eclass
@@ -240,6 +240,8 @@ systemd_install_serviced() {
 # @FUNCTION: systemd_dotmpfilesd
 # @USAGE: <tmpfilesd>...
 # @DESCRIPTION:
+# Deprecated in favor of tmpfiles.eclass.
+#
 # Install systemd tmpfiles.d files. Uses doins, thus it is fatal
 # in EAPI 4 and non-fatal in earlier EAPIs.
 systemd_dotmpfilesd() {
@@ -260,6 +262,8 @@ systemd_dotmpfilesd() {
 # @FUNCTION: systemd_newtmpfilesd
 # @USAGE: <old-name> <new-name>.conf
 # @DESCRIPTION:
+# Deprecated in favor of tmpfiles.eclass.
+#
 # Install systemd tmpfiles.d file under a new name. Uses newins, thus it
 # is fatal in EAPI 4 and non-fatal in earlier EAPIs.
 systemd_newtmpfilesd() {
@@ -435,6 +439,8 @@ systemd_is_booted() {
 # @FUNCTION: systemd_tmpfiles_create
 # @USAGE: <tmpfilesd> ...
 # @DESCRIPTION:
+# Deprecated in favor of tmpfiles.eclass.
+#
 # Invokes systemd-tmpfiles --create with given arguments.
 # Does nothing if ROOT != / or systemd-tmpfiles is not in PATH.
 # This function should be called from pkg_postinst.