diff --git a/data/hooks/conf_regen/28-rmilter b/data/hooks/conf_regen/28-rmilter
index b783a5188..db42371e8 100755
--- a/data/hooks/conf_regen/28-rmilter
+++ b/data/hooks/conf_regen/28-rmilter
@@ -9,6 +9,10 @@ do_pre_regen() {
 
   install -D -m 644 rmilter.conf \
     "${pending_dir}/etc/rmilter.conf"
+  # Remove old socket file (we stopped using it, since rspamd 1.3.1)
+  # Regen-conf system need an empty file to delete it
+  install -D -m 644 /dev/null \
+    "${pending_dir}/etc/systemd/system/rmilter.socket"
 }
 
 do_post_regen() {