diff --git a/src/bin/pg_test_timing/pg_test_timing.c b/src/bin/pg_test_timing/pg_test_timing.c
index c29d6f8762..ea2b565b14 100644
--- a/src/bin/pg_test_timing/pg_test_timing.c
+++ b/src/bin/pg_test_timing/pg_test_timing.c
@@ -133,7 +133,7 @@ test_timing(unsigned int duration)
 	total_time = duration > 0 ? duration * INT64CONST(1000000) : 0;
 
 	INSTR_TIME_SET_CURRENT(start_time);
-	cur = INSTR_TIME_GET_MICROSEC(start_time);
+	cur = INSTR_TIME_GET_NANOSEC(start_time);
 
 	while (time_elapsed < total_time)
 	{
@@ -142,7 +142,7 @@ test_timing(unsigned int duration)
 
 		prev = cur;
 		INSTR_TIME_SET_CURRENT(temp);
-		cur = INSTR_TIME_GET_MICROSEC(temp);
+		cur = INSTR_TIME_GET_NANOSEC(temp);
 		diff = cur - prev;
 
 		/* Did time go backwards? */
@@ -183,7 +183,7 @@ output(uint64 loop_count)
 {
 	int64		max_bit = 31,
 				i;
-	char	   *header1 = _("< us");
+	char	   *header1 = _("< ns");
 	char	   *header2 = /* xgettext:no-c-format */ _("% of total");
 	char	   *header3 = _("count");
 	int			len1 = strlen(header1);