diff --git a/phpBB/docs/CHANGELOG.html b/phpBB/docs/CHANGELOG.html
index 0cc96dfa8e..3878d68d19 100644
--- a/phpBB/docs/CHANGELOG.html
+++ b/phpBB/docs/CHANGELOG.html
@@ -105,6 +105,7 @@
 		<li>[Fix] Only change topic/post icon if icons are enabled and user is allowed to. (Bug #46355 - Patch by bantu)</li>
 		<li>[Fix] Fix saving custom profile fields in ACP if Oracle used (Bug #46015)</li>
 		<li>[Fix] Make view_log() more resilient to corrupt serialized data. (Bug #46545)</li>
+		<li>[Fix] Show error if hostname lookup doesn't return a valid IP address when banning. (Bug #45585 - Patch by bantu)</li>
 		<li>[Change] Change the data format of the default file ACM to be more secure from tampering and have better performance.</li>
 		<li>[Change] Add index on log_time to the log table to prevent slowdown on boards with many log entries. (Bug #44665 - Patch by bantu)</li>
 		<li>[Change] Template engine now permits to a limited extent variable includes.</li>
diff --git a/phpBB/includes/functions_user.php b/phpBB/includes/functions_user.php
index 48fb532d00..ab0122866c 100644
--- a/phpBB/includes/functions_user.php
+++ b/phpBB/includes/functions_user.php
@@ -910,7 +910,8 @@ function user_ban($mode, $ban, $ban_len, $ban_len_other, $ban_exclude, $ban_reas
 						}
 					}
 				}
-				else
+
+				if (empty($banlist_ary))
 				{
 					trigger_error('NO_IPS_DEFINED');
 				}