diff --git a/photologue_custom/templates/photologue/gallery_archive.html b/photologue_custom/templates/photologue/gallery_archive.html
index c3571cb..364ae4e 100644
--- a/photologue_custom/templates/photologue/gallery_archive.html
+++ b/photologue_custom/templates/photologue/gallery_archive.html
@@ -1,4 +1,7 @@
 {% extends "photologue/root.html" %}
+{% comment %}
+SPDX-License-Identifier: GPL-3.0-or-later
+{% endcomment %}
 {% load i18n %}
 
 {% block title %}{% trans "Latest photo galleries" %}{% endblock %}
diff --git a/photologue_custom/templates/photologue/gallery_archive_year.html b/photologue_custom/templates/photologue/gallery_archive_year.html
index 44b1e3c..6a895bb 100644
--- a/photologue_custom/templates/photologue/gallery_archive_year.html
+++ b/photologue_custom/templates/photologue/gallery_archive_year.html
@@ -1,4 +1,7 @@
 {% extends "photologue/root.html" %}
+{% comment %}
+SPDX-License-Identifier: GPL-3.0-or-later
+{% endcomment %}
 {% load i18n %}
 
 {% block title %}{% blocktrans with show_year=year|date:"Y" %}Galleries for {{ show_year }}{% endblocktrans %}{% endblock %}
diff --git a/photologue_custom/templates/photologue/gallery_detail.html b/photologue_custom/templates/photologue/gallery_detail.html
index 2000729..1a24121 100644
--- a/photologue_custom/templates/photologue/gallery_detail.html
+++ b/photologue_custom/templates/photologue/gallery_detail.html
@@ -1,4 +1,7 @@
 {% extends "photologue/root.html" %}
+{% comment %}
+SPDX-License-Identifier: GPL-3.0-or-later
+{% endcomment %}
 {% load static i18n %}
 
 {% block title %}{{ gallery.title }}{% endblock %}
diff --git a/photologue_custom/templates/photologue/photo_detail.html b/photologue_custom/templates/photologue/photo_detail.html
index af7ebe8..9aff5b9 100644
--- a/photologue_custom/templates/photologue/photo_detail.html
+++ b/photologue_custom/templates/photologue/photo_detail.html
@@ -1,4 +1,7 @@
 {% extends "photologue/root.html" %}
+{% comment %}
+SPDX-License-Identifier: GPL-3.0-or-later
+{% endcomment %}
 {% load photologue_tags i18n %}
 
 {% block title %}{{ object.title }}{% endblock %}