diff --git a/include/ilib/subscribers.h b/include/ilib/subscribers.h
index c624eaf..212263b 100644
--- a/include/ilib/subscribers.h
+++ b/include/ilib/subscribers.h
@@ -1,4 +1,23 @@
-/* subscribers.h - Subscriber pool & persistence management */
+/*
+ * this is free software: you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published
+ * by the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * this is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ * See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.";
+ *
+ * (c) Alexander Vdolainen 2007, 2026 <alex@vapaa.xyz>
+ * subrelay: a minimalistic maillist server based on external IMAPs/SMTPs
+ *
+ * subscribers.h: mail list subscribers pool
+ *
+ */
 #ifndef __SUBSCRIBERS_H__
 #define __SUBSCRIBERS_H__
 
@@ -9,7 +28,6 @@ typedef struct subscriber_entry {
     char *email;
 } subscriber_entry_t;
 
-/* Global state wrapper */
 typedef struct subscriber_pool {
     splay_t tree;
     char *filepath;
diff --git a/src/subscribers.c b/src/subscribers.c
index a9e7398..093cb6d 100644
--- a/src/subscribers.c
+++ b/src/subscribers.c
@@ -1,4 +1,25 @@
-/* subscribers.c - Subscriber pool implementation */
+/*
+ * this is free software: you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published
+ * by the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * this is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ * See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.";
+ *
+ * (c) Alexander Vdolainen 2007, 2026 <alex@vapaa.xyz>
+ * subrelay: a minimalistic maillist server based on external IMAPs/SMTPs
+ *
+ * subscribers.c: mail list subscribers pool
+ *
+ */
+
+
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
@@ -127,7 +148,7 @@ int subscriber_save_file(subscriber_pool_t *pool)
   if (!fp) return -errno;
 
   /* Write plain-text header */
-  fprintf(fp, "# Subrelay Subscribers List\n");
+  fprintf(fp, "# Subrelay mail list subscribers\n");
   fprintf(fp, "# Do not edit manually while subrelayd is running\n\n");
 
   /* In-order traversal across splay tree nodes */