diff --git a/options/locale/locale_en-US.ini b/options/locale/locale_en-US.ini
index 79eb86a175..c0b3ee242d 100644
--- a/options/locale/locale_en-US.ini
+++ b/options/locale/locale_en-US.ini
@@ -99,6 +99,7 @@ disabled = Disabled
 locked = Locked
 
 copy = Copy
+copy_generic = Copy to clipboard
 copy_url = Copy URL
 copy_hash = Copy hash
 copy_content = Copy content
diff --git a/templates/repo/diff/box.tmpl b/templates/repo/diff/box.tmpl
index 6b343e4ee0..71154f9768 100644
--- a/templates/repo/diff/box.tmpl
+++ b/templates/repo/diff/box.tmpl
@@ -130,7 +130,7 @@
 								</div>
 								<span class="file tw-flex tw-items-center tw-font-mono tw-flex-1"><a class="muted file-link" title="{{if $file.IsRenamed}}{{$file.OldName}} → {{end}}{{$file.Name}}" href="#diff-{{$file.NameHash}}">{{if $file.IsRenamed}}{{$file.OldName}} → {{end}}{{$file.Name}}</a>
 									{{if .IsLFSFile}} ({{ctx.Locale.Tr "repo.stored_lfs"}}){{end}}
-									<button class="btn interact-fg tw-p-2" data-clipboard-text="{{$file.Name}}">{{svg "octicon-copy" 14}}</button>
+									<button class="btn interact-fg tw-p-2" data-clipboard-text="{{$file.Name}}" data-tooltip-content="{{ctx.Locale.Tr "copy_generic"}}" aria-label="{{ctx.Locale.Tr "copy_generic"}}">{{svg "octicon-copy" 14}}</button>
 									{{if $file.IsGenerated}}
 										<span class="ui label">{{ctx.Locale.Tr "repo.diff.generated"}}</span>
 									{{end}}