diff --git a/qutebrowser/misc/sessions.py b/qutebrowser/misc/sessions.py
index 0a4fae5b7..54ba35014 100644
--- a/qutebrowser/misc/sessions.py
+++ b/qutebrowser/misc/sessions.py
@@ -426,7 +426,7 @@ class SessionManager(QObject):
             base, ext = os.path.splitext(filename)
             if ext == '.yml':
                 sessions.append(base)
-        return sessions
+        return sorted(sessions)
 
     @cmdutils.register(instance='session-manager')
     @cmdutils.argument('name', completion=miscmodels.session)
diff --git a/tests/unit/misc/test_sessions.py b/tests/unit/misc/test_sessions.py
index 00311ec8e..236d695c1 100644
--- a/tests/unit/misc/test_sessions.py
+++ b/tests/unit/misc/test_sessions.py
@@ -372,7 +372,7 @@ class TestListSessions:
         (tmpdir / 'foo.yml').ensure()
         (tmpdir / 'bar.yml').ensure()
         sess_man = sessions.SessionManager(str(tmpdir))
-        assert sorted(sess_man.list_sessions()) == ['bar', 'foo']
+        assert sess_man.list_sessions() == ['bar', 'foo']
 
     def test_with_other_files(self, tmpdir):
         (tmpdir / 'foo.yml').ensure()