diff --git a/include/ilib/splay.h b/include/ilib/splay.h
index 442bda9..6cca7e4 100644
--- a/include/ilib/splay.h
+++ b/include/ilib/splay.h
@@ -1,13 +1,28 @@
-/* splay tree 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
+ *
+ * splay.h: splay tree implementation
+ *
+ */
 #ifndef __SPLAY_H__
 #define __SPLAY_H__
 
 #include <stdint.h>
 
-#define tree_root_priv(T) ((T)->splay_sentinel.splay_left)
-#define tree_null_priv(L) (&(L)->splay_sentinel)
-#define TREE_DEPTH_MAX 64
-
 typedef long (*splay_compare_t)(const void*, const void*);
 
 typedef struct __splay_node_t {
@@ -20,7 +35,6 @@ typedef struct __splay_node_t {
 
 typedef struct __splay_t {
   uint64_t nodecount;
-  uint64_t maxcount;
   splay_node_t splay_sentinel;
   splay_compare_t splay_compare;
   void *splay_context;
diff --git a/src/splay.c b/src/splay.c
index 6875bf6..78c22d5 100644
--- a/src/splay.c
+++ b/src/splay.c
@@ -1,4 +1,23 @@
-/* splay tree 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
+ *
+ * splay.c: splay tree implementation
+ *
+ */
 
 #include <stdio.h>
 #include <stdlib.h>
@@ -7,6 +26,9 @@
 
 #include <ilib/splay.h>
 
+#define tree_root_priv(T) ((T)->splay_sentinel.splay_left)
+#define tree_null_priv(L) (&(L)->splay_sentinel)
+
 static void splay_node(splay_t *, splay_node_t *);
 static void tree_rotate_left(splay_node_t *, splay_node_t *);
 static void tree_rotate_right(splay_node_t *, splay_node_t *);
@@ -21,8 +43,6 @@ int splay_init(splay_t *sp, splay_compare_t cmp_fu)
 
   memset(sp, 0, sizeof(splay_t));
 
-  /* FIXME: do better maxcount */
-  sp->maxcount = 65535;
   sp->splay_compare = cmp_fu;
 
   /* tree init */