diff --git a/templates/post_reply.html b/templates/post_reply.html
index 352baf27..eaa92a74 100644
--- a/templates/post_reply.html
+++ b/templates/post_reply.html
@@ -31,7 +31,7 @@
 		 {{ post.time|date(config.post_date) }}
 	</label>
 	{% if config.poster_ids %}
-		 ID: {{ post.ip|poster_id(post.id) }}
+		 ID: {{ post.ip|poster_id(post.thread) }}
 	{% endif %}
 	 <a class="post_no" {% if not index %}onclick="highlightReply({{ post.id }})" {% endif %}href="{{ post.link }}">No.</a>
 	<a class="post_no"