diff --git a/cmd-bind-key.c b/cmd-bind-key.c
index b7fa5eff..6182e942 100644
--- a/cmd-bind-key.c
+++ b/cmd-bind-key.c
@@ -107,7 +107,7 @@ cmd_bind_key_table(struct cmd *self, struct cmd_ctx *ctx, int key)
 
 	mtmp.key = key;
 	mtmp.mode = !!args_has(args, 'c');
-	if ((mbind = SPLAY_FIND(mode_key_tree, mtab->tree, &mtmp)) != NULL) {
+	if ((mbind = RB_FIND(mode_key_tree, mtab->tree, &mtmp)) != NULL) {
 		mbind->cmd = cmd;
 		return (0);
 	}
@@ -115,6 +115,6 @@ cmd_bind_key_table(struct cmd *self, struct cmd_ctx *ctx, int key)
 	mbind->key = mtmp.key;
 	mbind->mode = mtmp.mode;
 	mbind->cmd = cmd;
-	SPLAY_INSERT(mode_key_tree, mtab->tree, mbind);
+	RB_INSERT(mode_key_tree, mtab->tree, mbind);
 	return (0);
 }
diff --git a/cmd-list-keys.c b/cmd-list-keys.c
index c76389ad..40543c9f 100644
--- a/cmd-list-keys.c
+++ b/cmd-list-keys.c
@@ -55,7 +55,7 @@ cmd_list_keys_exec(struct cmd *self, struct cmd_ctx *ctx)
 
 	width = 0;
 
-	SPLAY_FOREACH(bd, key_bindings, &key_bindings) {
+	RB_FOREACH(bd, key_bindings, &key_bindings) {
 		key = key_string_lookup_key(bd->key & ~KEYC_PREFIX);
 		if (key == NULL)
 			continue;
@@ -72,7 +72,7 @@ cmd_list_keys_exec(struct cmd *self, struct cmd_ctx *ctx)
 			width = keywidth;
 	}
 
-	SPLAY_FOREACH(bd, key_bindings, &key_bindings) {
+	RB_FOREACH(bd, key_bindings, &key_bindings) {
 		key = key_string_lookup_key(bd->key & ~KEYC_PREFIX);
 		if (key == NULL)
 			continue;
@@ -116,7 +116,7 @@ cmd_list_keys_table(struct cmd *self, struct cmd_ctx *ctx)
 
 	width = 0;
 	any_mode = 0;
-	SPLAY_FOREACH(mbind, mode_key_tree, mtab->tree) {
+	RB_FOREACH(mbind, mode_key_tree, mtab->tree) {
 		key = key_string_lookup_key(mbind->key);
 		if (key == NULL)
 			continue;
@@ -129,7 +129,7 @@ cmd_list_keys_table(struct cmd *self, struct cmd_ctx *ctx)
 			width = keywidth;
 	}
 
-	SPLAY_FOREACH(mbind, mode_key_tree, mtab->tree) {
+	RB_FOREACH(mbind, mode_key_tree, mtab->tree) {
 		key = key_string_lookup_key(mbind->key);
 		if (key == NULL)
 			continue;
diff --git a/cmd-unbind-key.c b/cmd-unbind-key.c
index 7ecf3069..723edac3 100644
--- a/cmd-unbind-key.c
+++ b/cmd-unbind-key.c
@@ -57,8 +57,8 @@ cmd_unbind_key_exec(struct cmd *self, unused struct cmd_ctx *ctx)
 	int			 key;
 
 	if (args_has(args, 'a')) {
-		while (!SPLAY_EMPTY(&key_bindings)) {
-			bd = SPLAY_ROOT(&key_bindings);
+		while (!RB_EMPTY(&key_bindings)) {
+			bd = RB_ROOT(&key_bindings);
 			key_bindings_remove(bd->key);
 		}
 		return (0);
@@ -95,8 +95,8 @@ cmd_unbind_key_table(struct cmd *self, struct cmd_ctx *ctx, int key)
 
 	mtmp.key = key;
 	mtmp.mode = !!args_has(args, 'c');
-	if ((mbind = SPLAY_FIND(mode_key_tree, mtab->tree, &mtmp)) != NULL) {
-		SPLAY_REMOVE(mode_key_tree, mtab->tree, mbind);
+	if ((mbind = RB_FIND(mode_key_tree, mtab->tree, &mtmp)) != NULL) {
+		RB_REMOVE(mode_key_tree, mtab->tree, mbind);
 		xfree(mbind);
 	}
 	return (0);
diff --git a/key-bindings.c b/key-bindings.c
index d71fd521..76439f7d 100644
--- a/key-bindings.c
+++ b/key-bindings.c
@@ -24,7 +24,7 @@
 
 #include "tmux.h"
 
-SPLAY_GENERATE(key_bindings, key_binding, entry, key_bindings_cmp);
+RB_GENERATE(key_bindings, key_binding, entry, key_bindings_cmp);
 
 struct key_bindings	key_bindings;
 struct key_bindings	dead_key_bindings;
@@ -52,7 +52,7 @@ key_bindings_lookup(int key)
 	struct key_binding	bd;
 
 	bd.key = key;
-	return (SPLAY_FIND(key_bindings, &key_bindings, &bd));
+	return (RB_FIND(key_bindings, &key_bindings, &bd));
 }
 
 void
@@ -64,7 +64,7 @@ key_bindings_add(int key, int can_repeat, struct cmd_list *cmdlist)
 
 	bd = xmalloc(sizeof *bd);
 	bd->key = key;
-	SPLAY_INSERT(key_bindings, &key_bindings, bd);
+	RB_INSERT(key_bindings, &key_bindings, bd);
 
 	bd->can_repeat = can_repeat;
 	bd->cmdlist = cmdlist;
@@ -77,8 +77,8 @@ key_bindings_remove(int key)
 
 	if ((bd = key_bindings_lookup(key)) == NULL)
 		return;
-	SPLAY_REMOVE(key_bindings, &key_bindings, bd);
-	SPLAY_INSERT(key_bindings, &dead_key_bindings, bd);
+	RB_REMOVE(key_bindings, &key_bindings, bd);
+	RB_INSERT(key_bindings, &dead_key_bindings, bd);
 }
 
 void
@@ -86,9 +86,9 @@ key_bindings_clean(void)
 {
 	struct key_binding	*bd;
 
-	while (!SPLAY_EMPTY(&dead_key_bindings)) {
-		bd = SPLAY_ROOT(&dead_key_bindings);
-		SPLAY_REMOVE(key_bindings, &dead_key_bindings, bd);
+	while (!RB_EMPTY(&dead_key_bindings)) {
+		bd = RB_ROOT(&dead_key_bindings);
+		RB_REMOVE(key_bindings, &dead_key_bindings, bd);
 		cmd_list_free(bd->cmdlist);
 		xfree(bd);
 	}
@@ -179,7 +179,7 @@ key_bindings_init(void)
 	struct cmd	*cmd;
 	struct cmd_list	*cmdlist;
 
-	SPLAY_INIT(&key_bindings);
+	RB_INIT(&key_bindings);
 
 	for (i = 0; i < nitems(table); i++) {
 		cmdlist = xmalloc(sizeof *cmdlist);
diff --git a/mode-key.c b/mode-key.c
index c8581d7b..f1df0a4b 100644
--- a/mode-key.c
+++ b/mode-key.c
@@ -412,7 +412,7 @@ const struct mode_key_table mode_key_tables[] = {
 	{ NULL, NULL, NULL, NULL }
 };
 
-SPLAY_GENERATE(mode_key_tree, mode_key_binding, entry, mode_key_cmp);
+RB_GENERATE(mode_key_tree, mode_key_binding, entry, mode_key_cmp);
 
 int
 mode_key_cmp(struct mode_key_binding *mbind1, struct mode_key_binding *mbind2)
@@ -462,13 +462,13 @@ mode_key_init_trees(void)
 	struct mode_key_binding		*mbind;
 
 	for (mtab = mode_key_tables; mtab->name != NULL; mtab++) {
-		SPLAY_INIT(mtab->tree);
+		RB_INIT(mtab->tree);
 		for (ment = mtab->table; ment->mode != -1; ment++) {
 			mbind = xmalloc(sizeof *mbind);
 			mbind->key = ment->key;
 			mbind->mode = ment->mode;
 			mbind->cmd = ment->cmd;
-			SPLAY_INSERT(mode_key_tree, mtab->tree, mbind);
+			RB_INSERT(mode_key_tree, mtab->tree, mbind);
 		}
 	}
 }
@@ -487,7 +487,7 @@ mode_key_lookup(struct mode_key_data *mdata, int key)
 
 	mtmp.key = key;
 	mtmp.mode = mdata->mode;
-	if ((mbind = SPLAY_FIND(mode_key_tree, mdata->tree, &mtmp)) == NULL) {
+	if ((mbind = RB_FIND(mode_key_tree, mdata->tree, &mtmp)) == NULL) {
 		if (mdata->mode != 0)
 			return (MODEKEY_NONE);
 		return (MODEKEY_OTHER);
diff --git a/options.c b/options.c
index bfcc6672..68d20912 100644
--- a/options.c
+++ b/options.c
@@ -28,7 +28,7 @@
  * a splay tree.
  */
 
-SPLAY_GENERATE(options_tree, options_entry, entry, options_cmp);
+RB_GENERATE(options_tree, options_entry, entry, options_cmp);
 
 int
 options_cmp(struct options_entry *o1, struct options_entry *o2)
@@ -39,7 +39,7 @@ options_cmp(struct options_entry *o1, struct options_entry *o2)
 void
 options_init(struct options *oo, struct options *parent)
 {
-	SPLAY_INIT(&oo->tree);
+	RB_INIT(&oo->tree);
 	oo->parent = parent;
 }
 
@@ -48,9 +48,9 @@ options_free(struct options *oo)
 {
 	struct options_entry	*o;
 
-	while (!SPLAY_EMPTY(&oo->tree)) {
-		o = SPLAY_ROOT(&oo->tree);
-		SPLAY_REMOVE(options_tree, &oo->tree, o);
+	while (!RB_EMPTY(&oo->tree)) {
+		o = RB_ROOT(&oo->tree);
+		RB_REMOVE(options_tree, &oo->tree, o);
 		xfree(o->name);
 		if (o->type == OPTIONS_STRING)
 			xfree(o->str);
@@ -64,7 +64,7 @@ options_find1(struct options *oo, const char *name)
 	struct options_entry	p;
 
 	p.name = (char *) name;
-	return (SPLAY_FIND(options_tree, &oo->tree, &p));
+	return (RB_FIND(options_tree, &oo->tree, &p));
 }
 
 struct options_entry *
@@ -73,12 +73,12 @@ options_find(struct options *oo, const char *name)
 	struct options_entry	*o, p;
 
 	p.name = (char *) name;
-	o = SPLAY_FIND(options_tree, &oo->tree, &p);
+	o = RB_FIND(options_tree, &oo->tree, &p);
 	while (o == NULL) {
 		oo = oo->parent;
 		if (oo == NULL)
 			break;
-		o = SPLAY_FIND(options_tree, &oo->tree, &p);
+		o = RB_FIND(options_tree, &oo->tree, &p);
 	}
 	return (o);
 }
@@ -91,7 +91,7 @@ options_remove(struct options *oo, const char *name)
 	if ((o = options_find1(oo, name)) == NULL)
 		return;
 
-	SPLAY_REMOVE(options_tree, &oo->tree, o);
+	RB_REMOVE(options_tree, &oo->tree, o);
 	xfree(o->name);
 	if (o->type == OPTIONS_STRING)
 		xfree(o->str);
@@ -107,7 +107,7 @@ options_set_string(struct options *oo, const char *name, const char *fmt, ...)
 	if ((o = options_find1(oo, name)) == NULL) {
 		o = xmalloc(sizeof *o);
 		o->name = xstrdup(name);
-		SPLAY_INSERT(options_tree, &oo->tree, o);
+		RB_INSERT(options_tree, &oo->tree, o);
 	} else if (o->type == OPTIONS_STRING)
 		xfree(o->str);
 
@@ -138,7 +138,7 @@ options_set_number(struct options *oo, const char *name, long long value)
 	if ((o = options_find1(oo, name)) == NULL) {
 		o = xmalloc(sizeof *o);
 		o->name = xstrdup(name);
-		SPLAY_INSERT(options_tree, &oo->tree, o);
+		RB_INSERT(options_tree, &oo->tree, o);
 	} else if (o->type == OPTIONS_STRING)
 		xfree(o->str);
 
diff --git a/tmux.h b/tmux.h
index 22d7af65..f1da2b50 100644
--- a/tmux.h
+++ b/tmux.h
@@ -541,9 +541,9 @@ struct mode_key_binding {
 	int			mode;
 	enum mode_key_cmd	cmd;
 
-	SPLAY_ENTRY(mode_key_binding) entry;
+	RB_ENTRY(mode_key_binding) entry;
 };
-SPLAY_HEAD(mode_key_tree, mode_key_binding);
+RB_HEAD(mode_key_tree, mode_key_binding);
 
 /* Command to string mapping. */
 struct mode_key_cmdstr {
@@ -670,11 +670,11 @@ struct options_entry {
 	char		*str;
 	long long	 num;
 
-	SPLAY_ENTRY(options_entry) entry;
+	RB_ENTRY(options_entry) entry;
 };
 
 struct options {
-	SPLAY_HEAD(options_tree, options_entry) tree;
+	RB_HEAD(options_tree, options_entry) tree;
 	struct options	*parent;
 };
 
@@ -1272,9 +1272,9 @@ struct key_binding {
 	struct cmd_list	*cmdlist;
 	int		 can_repeat;
 
-	SPLAY_ENTRY(key_binding) entry;
+	RB_ENTRY(key_binding) entry;
 };
-SPLAY_HEAD(key_bindings, key_binding);
+RB_HEAD(key_bindings, key_binding);
 
 /*
  * Option table entries. The option table is the user-visible part of the
@@ -1379,7 +1379,7 @@ extern struct mode_key_tree mode_key_tree_emacs_edit;
 extern struct mode_key_tree mode_key_tree_emacs_choice;
 extern struct mode_key_tree mode_key_tree_emacs_copy;
 int	mode_key_cmp(struct mode_key_binding *, struct mode_key_binding *);
-SPLAY_PROTOTYPE(mode_key_tree, mode_key_binding, entry, mode_key_cmp);
+RB_PROTOTYPE(mode_key_tree, mode_key_binding, entry, mode_key_cmp);
 const char *mode_key_tostring(const struct mode_key_cmdstr *,
 	    enum mode_key_cmd);
 enum mode_key_cmd mode_key_fromstring(const struct mode_key_cmdstr *,
@@ -1391,7 +1391,7 @@ enum mode_key_cmd mode_key_lookup(struct mode_key_data *, int);
 
 /* options.c */
 int	options_cmp(struct options_entry *, struct options_entry *);
-SPLAY_PROTOTYPE(options_tree, options_entry, entry, options_cmp);
+RB_PROTOTYPE(options_tree, options_entry, entry, options_cmp);
 void	options_init(struct options *, struct options *);
 void	options_free(struct options *);
 struct options_entry *options_find1(struct options *, const char *);
@@ -1653,7 +1653,7 @@ int	client_main(int, char **, int);
 /* key-bindings.c */
 extern struct key_bindings key_bindings;
 int	 key_bindings_cmp(struct key_binding *, struct key_binding *);
-SPLAY_PROTOTYPE(key_bindings, key_binding, entry, key_bindings_cmp);
+RB_PROTOTYPE(key_bindings, key_binding, entry, key_bindings_cmp);
 struct key_binding *key_bindings_lookup(int);
 void	 key_bindings_add(int, int, struct cmd_list *);
 void	 key_bindings_remove(int);