diff --git a/phpBB/styles/prosilver/template/posting_pm_header.html b/phpBB/styles/prosilver/template/posting_pm_header.html
index 0257b806c8..c7d3af217e 100644
--- a/phpBB/styles/prosilver/template/posting_pm_header.html
+++ b/phpBB/styles/prosilver/template/posting_pm_header.html
@@ -26,7 +26,7 @@
 			</dl>
 			<!-- ENDIF -->
 		</div>
-		<hr />
+		<!-- IF .to_recipient or .bcc_recipient --><hr /><!-- ENDIF -->
 		<div class="column1">
 			<!-- IF .to_recipient -->
 				<dl>