diff --git a/video/out/wayland_common.c b/video/out/wayland_common.c
index 51f68a46a6..7dfaff2459 100644
--- a/video/out/wayland_common.c
+++ b/video/out/wayland_common.c
@@ -1684,7 +1684,7 @@ static int update_window_title(struct vo_wayland_state *wl, const char *title)
     /* The xdg-shell protocol requires that the title is UTF-8. */
     void *tmp = talloc_new(NULL);
     struct bstr b_title = bstr_sanitize_utf8_latin1(tmp, bstr0(title));
-    xdg_toplevel_set_title(wl->xdg_toplevel, b_title.start);
+    xdg_toplevel_set_title(wl->xdg_toplevel, bstrto0(tmp, b_title));
     talloc_free(tmp);
     return VO_TRUE;
 }
diff --git a/video/out/x11_common.c b/video/out/x11_common.c
index 4988f8da7a..2ca2ea6574 100644
--- a/video/out/x11_common.c
+++ b/video/out/x11_common.c
@@ -1439,8 +1439,8 @@ static void vo_x11_update_window_title(struct vo *vo)
     /* _NET_WM_NAME and _NET_WM_ICON_NAME must be sanitized to UTF-8. */
     void *tmp = talloc_new(NULL);
     struct bstr b_title = bstr_sanitize_utf8_latin1(tmp, bstr0(x11->window_title));
-    vo_x11_set_property_utf8(vo, XA(x11, _NET_WM_NAME), b_title.start);
-    vo_x11_set_property_utf8(vo, XA(x11, _NET_WM_ICON_NAME), b_title.start);
+    vo_x11_set_property_utf8(vo, XA(x11, _NET_WM_NAME), bstrto0(tmp, b_title));
+    vo_x11_set_property_utf8(vo, XA(x11, _NET_WM_ICON_NAME), bstrto0(tmp, b_title));
     talloc_free(tmp);
 }