diff --git a/templates/post_form.html b/templates/post_form.html
index fbda9802..028de0f3 100644
--- a/templates/post_form.html
+++ b/templates/post_form.html
@@ -242,7 +242,12 @@
 			<td colspan="2">
 				<p class="unimportant board-settings">
 				{% if not config.disable_images %}
-				{% trans %}Allowed file types:{% endtrans %} {{ config.allowed_ext|join(', ') }}{% if config.allowed_ext_files %}, {{ config.allowed_ext_files|join(', ') }}{% endif %}<br />
+				{% trans %}Allowed file types:{% endtrans %}
+				{% if config.allowed_ext_op and not id %}
+					{{ config.allowed_ext_op|join(', ') }}
+				{% else %}
+					{{ config.allowed_ext|join(', ') }}{% if config.allowed_ext_files %}, {{ config.allowed_ext_files|join(', ') }}{% endif %}
+				{% endif %}<br />
 				{% trans %}Max filesize is{% endtrans %} {{ config.max_filesize|filesize }}.<br />
 				{% trans %}Max image dimensions are{% endtrans %} {{ config.max_height }} x {{ config.max_width }}.<br />
 				{% set max_images = config.max_images %} {# workaround for "The text to be translated with "trans" can only contain references to simple variables" #}