diff --git a/test/intl402/DurationFormat/prototype/format/digital-style-with-hours-display-auto-with-zero-hour.js b/test/intl402/DurationFormat/prototype/format/digital-style-with-hours-display-auto-with-zero-hour.js
index 12f217985b..766e6f503c 100644
--- a/test/intl402/DurationFormat/prototype/format/digital-style-with-hours-display-auto-with-zero-hour.js
+++ b/test/intl402/DurationFormat/prototype/format/digital-style-with-hours-display-auto-with-zero-hour.js
@@ -32,5 +32,5 @@ const durations = [
 ];
 
 for (const [duration, expected] of durations) {
-  assert.sameValue(df.format(duration), expected, `Duration is ${duration}`);
+  assert.sameValue(df.format(duration), expected, `Duration is ${JSON.stringify(duration)}`);
 }