diff --git a/templates/repo/issue/labels/label_list.tmpl b/templates/repo/issue/labels/label_list.tmpl
index d84f14242a..8d7fc2c3db 100644
--- a/templates/repo/issue/labels/label_list.tmpl
+++ b/templates/repo/issue/labels/label_list.tmpl
@@ -8,7 +8,7 @@
 					{{ctx.Locale.Tr "repo.issues.filter_sort"}}
 				</span>
 				{{svg "octicon-triangle-down" 14 "dropdown icon"}}
-				<div class="left menu">
+				<div class="menu">
 					<a class="{{if or (eq .SortType "alphabetically") (not .SortType)}}active {{end}}item" href="?sort=alphabetically&state={{$.State}}">{{ctx.Locale.Tr "repo.issues.label.filter_sort.alphabetically"}}</a>
 					<a class="{{if eq .SortType "reversealphabetically"}}active {{end}}item" href="?sort=reversealphabetically&state={{$.State}}">{{ctx.Locale.Tr "repo.issues.label.filter_sort.reverse_alphabetically"}}</a>
 					<a class="{{if eq .SortType "leastissues"}}active {{end}}item" href="?sort=leastissues&state={{$.State}}">{{ctx.Locale.Tr "repo.milestones.filter_sort.least_issues"}}</a>
diff --git a/web_src/css/modules/header.css b/web_src/css/modules/header.css
index 091d536cfc..05381e1185 100644
--- a/web_src/css/modules/header.css
+++ b/web_src/css/modules/header.css
@@ -135,6 +135,12 @@ h4.ui.header .sub.header {
   font-weight: var(--font-weight-normal);
 }
 
+/* open dropdown menus to the left in right-attached headers */
+.ui.attached.header > .ui.right .ui.dropdown .menu {
+  right: 0;
+  left: auto;
+}
+
 /* if a .top.attached.header is followed by a .segment, add some margin */
 .ui.segments + .ui.top.attached.header,
 .ui.attached.segment + .ui.top.attached.header {