diff --git a/instrumentation/opentelemetry-instrumentation-flask/tests/test_programmatic.py b/instrumentation/opentelemetry-instrumentation-flask/tests/test_programmatic.py
index d84c8b345b..2918021dd7 100644
--- a/instrumentation/opentelemetry-instrumentation-flask/tests/test_programmatic.py
+++ b/instrumentation/opentelemetry-instrumentation-flask/tests/test_programmatic.py
@@ -500,7 +500,7 @@ def test_flask_metrics_new_semconv(self):
         self.client.get("/hello/123")
         self.client.get("/hello/321")
         self.client.get("/hello/756")
-        duration = max(round((default_timer() - start) * 1000), 0)
+        duration_s = max(default_timer() - start, 0)
         metrics_list = self.memory_metrics_reader.get_metrics_data()
         number_data_point_seen = False
         histogram_data_point_seen = False
@@ -517,7 +517,7 @@ def test_flask_metrics_new_semconv(self):
                         if isinstance(point, HistogramDataPoint):
                             self.assertEqual(point.count, 3)
                             self.assertAlmostEqual(
-                                duration, point.sum, delta=10
+                                duration_s, point.sum, places=2
                             )
                             histogram_data_point_seen = True
                         if isinstance(point, NumberDataPoint):