diff --git a/phpBB/styles/prosilver/template/ucp_pm_popup.html b/phpBB/styles/prosilver/template/ucp_pm_popup.html
deleted file mode 100644
index 4cc39ee450..0000000000
--- a/phpBB/styles/prosilver/template/ucp_pm_popup.html
+++ /dev/null
@@ -1,25 +0,0 @@
-<!-- INCLUDE simple_header.html -->
-
-<script type="text/javascript">
-// <![CDATA[
-/**
-* Jump to inbox
-*/
-function jump_to_inbox(url)
-{
-	opener.document.location.href = url.replace(/&amp;/g, '&');
-	window.close();
-}
-// ]]>
-</script>
-
-<div class="panel">
-	<div class="inner">
-	<div class="content">
-		<p><!-- IF S_NOT_LOGGED_IN -->{L_LOGIN_CHECK_PM}<!-- ELSE -->{MESSAGE}<br /><br />{CLICK_TO_VIEW}<!-- ENDIF --></p>
-		<p class="small"><a href="#" onclick="window.close(); return false;">{L_CLOSE_WINDOW}</a></p>
-	</div>
-	</div>
-</div>
-
-<!-- INCLUDE simple_footer.html -->
diff --git a/phpBB/styles/subsilver2/template/ucp_pm_popup.html b/phpBB/styles/subsilver2/template/ucp_pm_popup.html
deleted file mode 100644
index b7032c6c30..0000000000
--- a/phpBB/styles/subsilver2/template/ucp_pm_popup.html
+++ /dev/null
@@ -1,37 +0,0 @@
-<!-- INCLUDE simple_header.html -->
-
-<script type="text/javascript">
-// <![CDATA[
-/**
-* Jump to inbox
-*/
-function jump_to_inbox(url)
-{
-	opener.document.location.href = url.replace(/&amp;/g, '&');
-	window.close();
-}
-// ]]>
-</script>
-
-<table width="100%" border="0" cellspacing="0" cellpadding="10">
-<tr>
-	<td>
-		<table width="100%" border="0" cellspacing="1" cellpadding="4" class="tablebg">
-		<tr class="row1"> 
-			<td valign="top" align="center">
-				<br /><span class="gen">
-				<!-- IF S_NOT_LOGGED_IN -->
-					{L_LOGIN_CHECK_PM}
-				<!-- ELSE -->
-					{MESSAGE}<br /><br />{CLICK_TO_VIEW}
-				<!-- ENDIF -->
-				</span>
-				<br /><br /><span class="genmed"><a href="#" onclick="window.close(); return false;">{L_CLOSE_WINDOW}</a></span><br /><br />
-			</td>
-		</tr>
-		</table>
-	</td>
-</tr>
-</table>
-
-<!-- INCLUDE simple_footer.html -->