diff --git a/cps/templates/config_edit.html b/cps/templates/config_edit.html
index 4b8aefde..84e95847 100644
--- a/cps/templates/config_edit.html
+++ b/cps/templates/config_edit.html
@@ -203,6 +203,10 @@
           <input type="checkbox" name="show_detail_random" id="show_detail_random" {% if content.show_detail_random() %}checked{% endif %}>
           <label for="show_detail_random">{{_('Show random books in detail view')}}</label>
       </div>
+      <div class="form-group">
+          <input type="checkbox" name="show_mature_content" id="show_mature_content" {% if content.show_mature_content() %}checked{% endif %}>
+          <label for="show_mature_content">{{_('Show mature content')}}</label>
+      </div>
     </div>
     </div>
     <div class="col-sm-12">
diff --git a/cps/ub.py b/cps/ub.py
index 0d0f78e0..324196c6 100644
--- a/cps/ub.py
+++ b/cps/ub.py
@@ -41,7 +41,7 @@ SIDEBAR_BEST_RATED = 128
 SIDEBAR_READ_AND_UNREAD = 256
 SIDEBAR_RECENT = 512
 SIDEBAR_SORTED = 1024
-
+MATURE_CONTENT = 2048
 
 DEFAULT_PASS = "admin123"
 DEFAULT_PORT = int(os.environ.get("CALIBRE_PORT", 8083))
@@ -458,6 +458,10 @@ class Config:
         return bool((self.config_default_show is not None) and
                     (self.config_default_show & SIDEBAR_SORTED == SIDEBAR_SORTED))
 
+    def show_mature_content(self):
+        return bool((self.config_default_show is not None) and
+                    (self.config_default_show & MATURE_CONTENT == MATURE_CONTENT))
+
     def mature_content_tags(self):
         if sys.version_info > (3, 0): # Python3 str, Python2 unicode
             lstrip = str.lstrip
@@ -665,7 +669,7 @@ def create_admin_user():
     user.role = ROLE_USER + ROLE_ADMIN + ROLE_DOWNLOAD + ROLE_UPLOAD + ROLE_EDIT + ROLE_DELETE_BOOKS + ROLE_PASSWD
     user.sidebar_view = DETAIL_RANDOM + SIDEBAR_LANGUAGE + SIDEBAR_SERIES + SIDEBAR_CATEGORY + SIDEBAR_HOT + \
             SIDEBAR_RANDOM + SIDEBAR_AUTHOR + SIDEBAR_BEST_RATED + SIDEBAR_READ_AND_UNREAD + SIDEBAR_RECENT + \
-            SIDEBAR_SORTED
+            SIDEBAR_SORTED + MATURE_CONTENT
 
     user.password = generate_password_hash(DEFAULT_PASS)
 
diff --git a/cps/web.py b/cps/web.py
index 33f1e4a9..a74f5f91 100755
--- a/cps/web.py
+++ b/cps/web.py
@@ -2601,6 +2601,9 @@ def configuration_helper(origin):
             content.config_default_show = content.config_default_show + ub.SIDEBAR_RECENT
         if "show_sorted" in to_save:
             content.config_default_show = content.config_default_show + ub.SIDEBAR_SORTED
+        if "show_mature_content" in to_save:
+            content.config_default_show = content.config_default_show + ub.MATURE_CONTENT
+
         if content.config_logfile != to_save["config_logfile"]:
             # check valid path, only path or file
             if os.path.dirname(to_save["config_logfile"]):
@@ -2724,6 +2727,7 @@ def new_user():
     else:
         content.role = config.config_default_role
         content.sidebar_view = config.config_default_show
+        content.mature_content = bool(config.config_default_show & ub.MATURE_CONTENT)
     return render_title_template("user_edit.html", new_user=1, content=content, translations=translations,
                                  languages=languages, title=_(u"Add new user"))