diff --git a/otterwiki/preferences.py b/otterwiki/preferences.py
index dff7e94..139b183 100644
--- a/otterwiki/preferences.py
+++ b/otterwiki/preferences.py
@@ -134,6 +134,10 @@ def handle_sidebar_preferences(form):
     _update_preference(
         "SIDEBAR_MENUTREE_MODE", form.get("sidebar_menutree_mode", "")
     )
+    for checkbox in [
+        "sidebar_menutree_ignore_case",
+    ]:
+        _update_preference(checkbox.upper(), form.get(checkbox, "False"))
     # commit changes to the database
     db.session.commit()
     update_app_config()
diff --git a/otterwiki/server.py b/otterwiki/server.py
index 5eafcd5..aa2e7b1 100644
--- a/otterwiki/server.py
+++ b/otterwiki/server.py
@@ -47,6 +47,7 @@
     SQLALCHEMY_TRACK_MODIFICATIONS=False,
     MINIFY_HTML=True,
     SIDEBAR_MENUTREE_MODE="SORTED",
+    SIDEBAR_MENUTREE_IGNORE_CASE=False,
     SIDEBAR_MENUTREE_MAXDEPTH="",
     SIDEBAR_CUSTOM_MENU="",
     COMMIT_MESSAGE="REQUIRED",  # OPTIONAL DIISABLED
@@ -135,6 +136,7 @@ def update_app_config():
                 "NOTIFY_ADMINS_ON_REGISTER",
                 "NOTIFY_USER_ON_APPROVAL",
                 "RETAIN_PAGE_NAME_CASE",
+                "SIDEBAR_MENUTREE_IGNORE_CASE",
                 "GIT_WEB_SERVER",
                 "HIDE_LOGO",
             ] or item.name.upper().startswith("SIDEBAR_SHORTCUT_"):
diff --git a/otterwiki/sidebar.py b/otterwiki/sidebar.py
index c96e43c..55e007f 100644
--- a/otterwiki/sidebar.py
+++ b/otterwiki/sidebar.py
@@ -107,9 +107,18 @@ def order_tree(
         # convert OrderedDict into list
         entries = list(tree.items())
         # decide sort_key lambda on mode
-        sort_key = lambda k: (True, str.lower(k[0]))
+        if app.config["SIDEBAR_MENUTREE_IGNORE_CASE"]:
+            sort_key = lambda k: (True, str.lower(k[0]))
+        else:
+            sort_key = lambda k: (True, k[0])
         if self.mode in ["DIRECTORIES_GROUPED"]:
-            sort_key = lambda k: (len(k[1]["children"]) == 0, str.lower(k[0]))
+            if app.config["SIDEBAR_MENUTREE_IGNORE_CASE"]:
+                sort_key = lambda k: (
+                    len(k[1]["children"]) == 0,
+                    str.lower(k[0]),
+                )
+            else:
+                sort_key = lambda k: (len(k[1]["children"]) == 0, k[0])
         # sort entries
         filtered_list = sorted(entries, key=sort_key)
         # filter entries
diff --git a/otterwiki/templates/admin/sidebar_preferences.html b/otterwiki/templates/admin/sidebar_preferences.html
index a43b4bd..eef2c5c 100644
--- a/otterwiki/templates/admin/sidebar_preferences.html
+++ b/otterwiki/templates/admin/sidebar_preferences.html
@@ -67,13 +67,23 @@ <h3 class="card-title">Custom Menu</h3>
 {##}
 <h3 class="card-title">Page Index</h3>
     <div class="form-group">
-        <label for="sidebar_menutree_mode" class="required">Page Index Mode</label>
+        <label for="sidebar_menutree_mode">Page Index Mode</label>
         <select class="form-control w-md-400" id="sidebar_menutree_mode" name="sidebar_menutree_mode">
 {% for mode in [("", "Not displayed"),("SORTED","Directories and pages, sorted"),("DIRECTORIES_GROUPED","Directories and pages, with directories grouped first"),("DIRECTORIES_ONLY","Directories only")] %}
             <option value="{{mode[0]}}"{%if config.SIDEBAR_MENUTREE_MODE == mode[0] %} selected="selected"{%endif%}>{{mode[1]}}</option>
 {% endfor %}
         </select>
     </div>
+{##}
+{%if config.RETAIN_PAGE_NAME_CASE %}
+    <div class="form-group">
+      <div class="custom-checkbox">
+        <input {%if config.SIDEBAR_MENUTREE_IGNORE_CASE %}checked{% endif %} type="checkbox" id="menutree_ignore_case" name="sidebar_menutree_ignore_case" value="True">
+        <label for="menutree_ignore_case">Sort case insensitive</label>
+      </div>
+    </div>
+{% endif %}
+{##}
     <div class="form-group">
         <label for="sidebar_menutree_maxdepth">Maximal depth of pages and directories listed.</label>
         <input name="sidebar_menutree_maxdepth" type="text" placeholder="unlimited" class="form-control w-md-400" id="sidebar_menutree_maxdepth" value="{{ config.SIDEBAR_MENUTREE_MAXDEPTH or "" }}">