diff --git a/phpBB/docs/CHANGELOG.html b/phpBB/docs/CHANGELOG.html
index 9ad93e8fea..f145431a5d 100644
--- a/phpBB/docs/CHANGELOG.html
+++ b/phpBB/docs/CHANGELOG.html
@@ -107,6 +107,7 @@
 		<li>[Fix] Added missing form token in acp (thanks NBBN).</li>
 		<li>[Feature] Added optional stricter upload validation to avoid mime sniffing in addition to the safeguards provided by file.php. (thanks to Nicolas Grekas for compiling the list).</li>
 		<li>[Fix] Do not remove whitespace in front of url containing the boards url and no relative path appended (Bug #27355)</li>
+		<li>[Change] Show email ban reason on registration. Additionally allow custom errors properly returned if using validate_data(). (Bug #26885)</li>
 	</ul>
 
 	<a name="v300"></a><h3>1.ii. Changes since 3.0.0</h3>
diff --git a/phpBB/includes/functions_user.php b/phpBB/includes/functions_user.php
index 1d774a8ff4..0ed93d4376 100644
--- a/phpBB/includes/functions_user.php
+++ b/phpBB/includes/functions_user.php
@@ -1194,6 +1194,8 @@ function user_ipwhois($ip)
 */
 function validate_data($data, $val_ary)
 {
+	global $user;
+
 	$error = array();
 
 	foreach ($val_ary as $var => $val_seq)
@@ -1210,7 +1212,8 @@ function validate_data($data, $val_ary)
 
 			if ($result = call_user_func_array('validate_' . $function, $validate))
 			{
-				$error[] = $result . '_' . strtoupper($var);
+				// Since errors are checked later for their language file existence, we need to make sure custom errors are not adjusted.
+				$error[] = (empty($user->lang[$result . '_' . strtoupper($var)])) ? $result : $result . '_' . strtoupper($var);
 			}
 		}
 	}
@@ -1610,9 +1613,9 @@ function validate_email($email, $allowed_email = false)
 		}
 	}
 
-	if ($user->check_ban(false, false, $email, true) == true)
+	if (($ban_reason = $user->check_ban(false, false, $email, true)) !== false)
 	{
-		return 'EMAIL_BANNED';
+		return ($ban_reason === true) ? 'EMAIL_BANNED' : $ban_reason;
 	}
 
 	if (!$config['allow_emailreuse'])
diff --git a/phpBB/styles/prosilver/template/mcp_queue.html b/phpBB/styles/prosilver/template/mcp_queue.html
index e2f140667c..0af3032fcf 100644
--- a/phpBB/styles/prosilver/template/mcp_queue.html
+++ b/phpBB/styles/prosilver/template/mcp_queue.html
@@ -36,7 +36,7 @@
 		<!-- BEGIN postrow -->
 
 		<!-- IF postrow.S_DELETED_TOPIC -->
-			<li><p class="notopics">{L_DELETED_TOPIC}</li>		
+			<li><p class="notopics">{L_DELETED_TOPIC}</p></li>
 		<!-- ELSE -->
 	
 		<li class="row<!-- IF postrow.S_ROW_COUNT is odd --> bg1<!-- ELSE --> bg2<!-- ENDIF -->">