diff --git a/glib/gspawn.c b/glib/gspawn.c
index 51b4c79ac..2b191634c 100644
--- a/glib/gspawn.c
+++ b/glib/gspawn.c
@@ -1798,7 +1798,7 @@ do_exec (gint                  child_err_report_fd,
                 child_err_report_fd = safe_dup (child_err_report_fd);
 
               safe_dup2 (source_fds[i], target_fds[i]);
-              (void) close (source_fds[i]);
+              close_and_invalidate (&source_fds[i]);
             }
         }
     }