diff --git a/cmd-server-info.c b/cmd-server-info.c
index e2e33646..1f6f2f51 100644
--- a/cmd-server-info.c
+++ b/cmd-server-info.c
@@ -89,10 +89,10 @@ cmd_server_info_exec(unused struct cmd *self, struct cmd_ctx *ctx)
 			continue;
 
 		ctx->print(ctx,"%2d: %s (%d, %d): %s [%ux%u %s bs=%hho "
-		    "xterm=%u] [flags=0x%x/0x%x, references=%u]", i,
+		    "class=%u] [flags=0x%x/0x%x, references=%u]", i,
 		    c->tty.path, c->ibuf.fd, c->tty.fd, c->session->name,
 		    c->tty.sx, c->tty.sy, c->tty.termname,
-		    c->tty.tio.c_cc[VERASE], c->tty.xterm_version,
+		    c->tty.tio.c_cc[VERASE], c->tty.class,
 		    c->flags, c->tty.flags, c->references);
 	}
 	ctx->print(ctx, "%s", "");
diff --git a/tmux.h b/tmux.h
index aca96613..faab3fee 100644
--- a/tmux.h
+++ b/tmux.h
@@ -1189,7 +1189,7 @@ struct tty {
 	struct client	*client;
 
 	char		*path;
-	u_int		 xterm_version;
+	u_int		 class;
 
 	u_int		 sx;
 	u_int		 sy;
@@ -1633,8 +1633,8 @@ void	tty_pututf8(struct tty *, const struct grid_utf8 *);
 void	tty_init(struct tty *, struct client *, int, char *);
 int	tty_resize(struct tty *);
 int	tty_set_size(struct tty *, u_int, u_int);
+void	tty_set_class(struct tty *, u_int);
 void	tty_start_tty(struct tty *);
-void	tty_set_version(struct tty *, u_int);
 void	tty_stop_tty(struct tty *);
 void	tty_set_title(struct tty *, const char *);
 void	tty_update_mode(struct tty *, int, struct screen *);
diff --git a/tty-keys.c b/tty-keys.c
index 9ed280e7..681f31b6 100644
--- a/tty-keys.c
+++ b/tty-keys.c
@@ -724,18 +724,17 @@ tty_keys_mouse(struct tty *tty, const char *buf, size_t len, size_t *size)
 int
 tty_keys_device(struct tty *tty, const char *buf, size_t len, size_t *size)
 {
-	u_int i, a, b;
+	u_int i, class;
 	char  tmp[64], *endptr;
 
 	/*
 	 * Primary device attributes are \033[?a;b and secondary are
-	 * \033[>a;b;c. We only request attributes on xterm, so we only care
-	 * about the middle values which is the xterm version.
+	 * \033[>a;b;c.
 	 */
 
 	*size = 0;
 
-	/* First three bytes are always \033[>. */
+	/* First three bytes are always \033[?. */
 	if (buf[0] != '\033')
 		return (-1);
 	if (len == 1)
@@ -760,22 +759,17 @@ tty_keys_device(struct tty *tty, const char *buf, size_t len, size_t *size)
 	tmp[i] = '\0';
 	*size = 4 + i;
 
-	/* Only secondary is of interest. */
-	if (buf[2] != '>')
+	/* Only primary is of interest. */
+	if (buf[2] != '?')
 		return (0);
 
-	/* Convert version numbers. */
-	a = strtoul(tmp, &endptr, 10);
-	if (*endptr == ';') {
-		b = strtoul(endptr + 1, &endptr, 10);
-		if (*endptr != '\0' && *endptr != ';')
-			b = 0;
-	} else
-		a = b = 0;
+	/* Convert service class. */
+	class = strtoul(tmp, &endptr, 10);
+	if (*endptr != ';')
+		class = 0;
 
-	log_debug("received xterm version %u", b);
-	if (b < 500)
-		tty_set_version(tty, b);
+	log_debug("received service class %u", class);
+	tty_set_class(tty, class);
 
 	return (0);
 }
diff --git a/tty.c b/tty.c
index 6663219f..9f414e11 100644
--- a/tty.c
+++ b/tty.c
@@ -224,7 +224,7 @@ tty_start_tty(struct tty *tty)
 		tty_puts(tty, "\033[?1000l");
 
 	if (tty_term_has(tty->term, TTYC_XT))
-		tty_puts(tty, "\033[>c");
+		tty_puts(tty, "\033[c");
 
 	tty->cx = UINT_MAX;
 	tty->cy = UINT_MAX;
@@ -240,11 +240,11 @@ tty_start_tty(struct tty *tty)
 }
 
 void
-tty_set_version(struct tty *tty, u_int version)
+tty_set_class(struct tty *tty, u_int class)
 {
-	if (tty->xterm_version != 0)
+	if (tty->class != 0)
 		return;
-	tty->xterm_version = version;
+	tty->class = class;
 }
 
 void
@@ -289,9 +289,6 @@ tty_stop_tty(struct tty *tty)
 		tty_raw(tty, "\033[?1000l");
 
 	tty_raw(tty, tty_term_string(tty->term, TTYC_RMCUP));
-
-	if (tty->xterm_version > 270)
-		tty_raw(tty, "\033[61;1\"p");
 }
 
 void