diff --git a/pgo/pgo.c b/pgo/pgo.c
index 92d97dbf..fec2d26c 100644
--- a/pgo/pgo.c
+++ b/pgo/pgo.c
@@ -98,7 +98,8 @@ bool wayl_win_set_urgent(struct wl_window *win) { return true; }
 
 bool
 spawn(struct reaper *reaper, const char *cwd, char *const argv[],
-      int stdin_fd, int stdout_fd, int stderr_fd)
+      int stdin_fd, int stdout_fd, int stderr_fd,
+      const char *xdg_activation_token)
 {
     return true;
 }