diff --git a/note_kfet/templates/400.html b/note_kfet/templates/400.html
index 89d7ba8..8b96e81 100644
--- a/note_kfet/templates/400.html
+++ b/note_kfet/templates/400.html
@@ -3,6 +3,7 @@
 SPDX-License-Identifier: GPL-3.0-or-later
 {% endcomment %}
 {% load i18n %}
+{% block contenttitle %}{% endblock %}
 
 {% block content %}
 <div class="card text-white bg-secondary">
diff --git a/note_kfet/templates/403.html b/note_kfet/templates/403.html
index 5256e32..1019904 100644
--- a/note_kfet/templates/403.html
+++ b/note_kfet/templates/403.html
@@ -3,6 +3,7 @@
 SPDX-License-Identifier: GPL-3.0-or-later
 {% endcomment %}
 {% load i18n %}
+{% block contenttitle %}{% endblock %}
 
 {% block content %}
 <div class="card text-white bg-secondary">
diff --git a/note_kfet/templates/404.html b/note_kfet/templates/404.html
index 03b8165..435bb7e 100644
--- a/note_kfet/templates/404.html
+++ b/note_kfet/templates/404.html
@@ -3,6 +3,7 @@
 SPDX-License-Identifier: GPL-3.0-or-later
 {% endcomment %}
 {% load i18n %}
+{% block contenttitle %}{% endblock %}
 
 {% block content %}
 <div class="card text-white bg-secondary">
diff --git a/note_kfet/templates/500.html b/note_kfet/templates/500.html
index fb7d1c6..ba4b587 100644
--- a/note_kfet/templates/500.html
+++ b/note_kfet/templates/500.html
@@ -3,6 +3,7 @@
 SPDX-License-Identifier: GPL-3.0-or-later
 {% endcomment %}
 {% load i18n %}
+{% block contenttitle %}{% endblock %}
 
 {% block content %}
 <div class="card text-white bg-secondary">