diff --git a/modules/timeutil/datetime.go b/modules/timeutil/datetime.go
index 3ae44cb714..c089173560 100644
--- a/modules/timeutil/datetime.go
+++ b/modules/timeutil/datetime.go
@@ -13,6 +13,8 @@ import (
 
 // DateTime renders an absolute time HTML element by datetime.
 func DateTime(format string, datetime any, extraAttrs ...string) template.HTML {
+	// TODO: remove the extraAttrs argument, it's not used in any call to DateTime
+
 	if p, ok := datetime.(*time.Time); ok {
 		datetime = *p
 	}
diff --git a/modules/timeutil/since.go b/modules/timeutil/since.go
index dfaa0e3e3a..dba42c793a 100644
--- a/modules/timeutil/since.go
+++ b/modules/timeutil/since.go
@@ -126,7 +126,7 @@ func timeSinceUnix(then, now time.Time, _ translation.Locale) template.HTML {
 	}
 
 	// declare data-tooltip-content attribute to switch from "title" tooltip to "tippy" tooltip
-	htm := fmt.Sprintf(`<relative-time class="time-since" prefix="" %s datetime="%s" data-tooltip-content data-tooltip-interactive="true">%s</relative-time>`,
+	htm := fmt.Sprintf(`<relative-time prefix="" %s datetime="%s" data-tooltip-content data-tooltip-interactive="true">%s</relative-time>`,
 		attrs, then.Format(time.RFC3339), friendlyText)
 	return template.HTML(htm)
 }
@@ -134,7 +134,7 @@ func timeSinceUnix(then, now time.Time, _ translation.Locale) template.HTML {
 // TimeSince renders relative time HTML given a time.Time
 func TimeSince(then time.Time, lang translation.Locale) template.HTML {
 	if setting.UI.PreferredTimestampTense == "absolute" {
-		return DateTime("full", then, `class="time-since"`)
+		return DateTime("full", then)
 	}
 	return timeSinceUnix(then, time.Now(), lang)
 }
diff --git a/tests/integration/repo_test.go b/tests/integration/repo_test.go
index 9f7221230b..50022b6a29 100644
--- a/tests/integration/repo_test.go
+++ b/tests/integration/repo_test.go
@@ -166,7 +166,7 @@ func testViewRepo(t *testing.T) {
 		})
 
 		// convert "2017-06-14 21:54:21 +0800" to "Wed, 14 Jun 2017 13:54:21 UTC"
-		htmlTimeString, _ := s.Find("relative-time.time-since").Attr("datetime")
+		htmlTimeString, _ := s.Find("relative-time").Attr("datetime")
 		htmlTime, _ := time.Parse(time.RFC3339, htmlTimeString)
 		f.commitTime = htmlTime.In(time.Local).Format(time.RFC1123)
 		items = append(items, f)
diff --git a/web_src/js/components/DiffCommitSelector.vue b/web_src/js/components/DiffCommitSelector.vue
index 54877a18c0..780ba22f0c 100644
--- a/web_src/js/components/DiffCommitSelector.vue
+++ b/web_src/js/components/DiffCommitSelector.vue
@@ -248,7 +248,7 @@ export default {
               {{ commit.committer_or_author_name }}
               <span class="text right">
                 <!-- TODO: make this respect the PreferredTimestampTense setting -->
-                <relative-time class="time-since" prefix="" :datetime="commit.time" data-tooltip-content data-tooltip-interactive="true">{{ commit.time }}</relative-time>
+                <relative-time prefix="" :datetime="commit.time" data-tooltip-content data-tooltip-interactive="true">{{ commit.time }}</relative-time>
               </span>
             </div>
           </div>