diff --git a/options-table.c b/options-table.c
index e901e249..fcf62bae 100644
--- a/options-table.c
+++ b/options-table.c
@@ -255,11 +255,6 @@ const struct options_table_entry session_options_table[] = {
 	  .default_num = 0
 	},
 
-	{ .name = "mouse-utf8",
-	  .type = OPTIONS_TABLE_FLAG,
-	  .default_num = 0
-	},
-
 	{ .name = "prefix",
 	  .type = OPTIONS_TABLE_KEY,
 	  .default_num = '\002',
diff --git a/server-client.c b/server-client.c
index eeec51d0..0c6ed9d0 100644
--- a/server-client.c
+++ b/server-client.c
@@ -809,14 +809,12 @@ server_client_reset_state(struct client *c)
 		mode = (mode & ~ALL_MOUSE_MODES) | MODE_MOUSE_BUTTON;
 
 	/*
-	 * Set UTF-8 mouse input if required. If the terminal is UTF-8, the
-	 * user has set mouse-utf8 and any mouse mode is in effect, turn on
-	 * UTF-8 mouse input. If the receiving terminal hasn't requested it
-	 * (that is, it isn't in s->mode), then it'll be converted in
-	 * input_mouse.
+	 * Set UTF-8 mouse input if required. If the terminal is UTF-8 and any
+	 * mouse mode is in effect, turn on UTF-8 mouse input. If the receiving
+	 * terminal hasn't requested it (that is, it isn't in s->mode), then
+	 * it'll be converted in input_mouse.
 	 */
-	if ((c->tty.flags & TTY_UTF8) &&
-	    (mode & ALL_MOUSE_MODES) && options_get_number(oo, "mouse-utf8"))
+	if ((c->tty.flags & TTY_UTF8) && (mode & ALL_MOUSE_MODES))
 		mode |= MODE_MOUSE_UTF8;
 	else
 		mode &= ~MODE_MOUSE_UTF8;
diff --git a/tmux.1 b/tmux.1
index 3361ec31..f741eab0 100644
--- a/tmux.1
+++ b/tmux.1
@@ -2659,10 +2659,6 @@ captures the mouse and allows mouse events to be bound as key bindings.
 See the
 .Sx MOUSE SUPPORT
 section for details.
-.It Xo Ic mouse-utf8
-.Op Ic on | off
-.Xc
-If enabled, request mouse input as UTF-8 on UTF-8 terminals.
 .It Ic prefix Ar key
 Set the key accepted as a prefix key.
 .It Ic prefix2 Ar key
diff --git a/tmux.c b/tmux.c
index c79a01bd..22e09e6e 100644
--- a/tmux.c
+++ b/tmux.c
@@ -301,7 +301,6 @@ main(int argc, char **argv)
 	/* Enable UTF-8 if the first client is on UTF-8 terminal. */
 	if (flags & CLIENT_UTF8) {
 		options_set_number(global_s_options, "status-utf8", 1);
-		options_set_number(global_s_options, "mouse-utf8", 1);
 		options_set_number(global_w_options, "utf8", 1);
 	}