diff --git a/note_kfet/templates/400.html b/note_kfet/templates/400.html
index 89d7ba85b931b308bc6408fcfc229efda05789a8..8b96e81753c633a4877e028dd752bf9c1c23e335 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 5256e32d6c2f3d141e207e344ecfc0427cdd7cf8..1019904315d6bfd55a49cf3477a4e82da49ff8c2 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 03b816584d7cc80986b34d21d04e9f5cb9b22618..435bb7ecfbe41dbfc65151ac2dae1e4baf0e57a3 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 fb7d1c69435c8af0b00fc788266db91286da4458..ba4b587597142e12647d7ca8658066b0fbee304a 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">