diff --git a/src/bin/pg_test_timing/pg_test_timing.c b/src/bin/pg_test_timing/pg_test_timing.c
index e14802372bd..79ef32353dc 100644
--- a/src/bin/pg_test_timing/pg_test_timing.c
+++ b/src/bin/pg_test_timing/pg_test_timing.c
@@ -138,7 +138,7 @@ test_timing(int32 duration)
 		if (diff < 0)
 		{
 			fprintf(stderr, _("Detected clock going backwards in time.\n"));
-			fprintf(stderr, _("Time warp: %d ms\n"), diff);
+			fprintf(stderr, _("Time warp: %d us\n"), diff);
 			exit(1);
 		}