diff --git a/utils.c b/utils.c
index bd52544..59b8b77 100644
--- a/utils.c
+++ b/utils.c
@@ -601,6 +601,9 @@ run_ptests(struct ptest_list *head, const struct ptest_options opts,
 			do_close(&pipefd_stderr[PIPE_READ]);
 			do_close(&pipefd_stderr[PIPE_WRITE]);
 
+			fflush(fp);
+			fflush(fp_stderr);
+
 		PTEST_LIST_ITERATE_END
 		fprintf(fp, "STOP: %s\n", progname);
 	} while (0);
@@ -611,6 +614,9 @@ run_ptests(struct ptest_list *head, const struct ptest_options opts,
 	if (opts.xml_filename)
 		xml_finish(xh);
 
+	fflush(fp);
+	fflush(fp_stderr);
+
 	return rc;
 }