diff --git a/phpBB/includes/acp/acp_attachments.php b/phpBB/includes/acp/acp_attachments.php
index 18a685c9b1..af22ed57e8 100644
--- a/phpBB/includes/acp/acp_attachments.php
+++ b/phpBB/includes/acp/acp_attachments.php
@@ -916,7 +916,7 @@ class acp_attachments
 							WHERE ' . $db->sql_in_set('attach_id', array_keys($delete_files));
 						$db->sql_query($sql);
 
-						add_log('admin', 'LOG_ATTACH_ORPHAN_DEL', implode($user->lang['COMMA_SEPARATOR'], $delete_files));
+						add_log('admin', 'LOG_ATTACH_ORPHAN_DEL', implode(', ', $delete_files));
 						$notify[] = sprintf($user->lang['LOG_ATTACH_ORPHAN_DEL'], implode($user->lang['COMMA_SEPARATOR'], $delete_files));
 					}
 
@@ -1470,7 +1470,7 @@ class acp_attachments
 			// Grab the list of entries
 			$ips = request_var('ips', '');
 			$ip_list = array_unique(explode("\n", $ips));
-			$ip_list_log = implode($user->lang['COMMA_SEPARATOR'], $ip_list);
+			$ip_list_log = implode(', ', $ip_list);
 
 			$ip_exclude = (int) $request->variable('ipexclude', false, false, phpbb_request_interface::POST);
 
diff --git a/phpBB/includes/acp/acp_bots.php b/phpBB/includes/acp/acp_bots.php
index af625e1da3..d53971ed08 100644
--- a/phpBB/includes/acp/acp_bots.php
+++ b/phpBB/includes/acp/acp_bots.php
@@ -123,7 +123,7 @@ class acp_bots
 
 						$cache->destroy('_bots');
 
-						add_log('admin', 'LOG_BOT_DELETE', implode($user->lang['COMMA_SEPARATOR'], $bot_name_ary));
+						add_log('admin', 'LOG_BOT_DELETE', implode(', ', $bot_name_ary));
 						trigger_error($user->lang['BOT_DELETED'] . adm_back_link($this->u_action));
 					}
 					else
diff --git a/phpBB/includes/acp/acp_email.php b/phpBB/includes/acp/acp_email.php
index 116d74046a..c9d149b6d7 100644
--- a/phpBB/includes/acp/acp_email.php
+++ b/phpBB/includes/acp/acp_email.php
@@ -216,7 +216,7 @@ class acp_email
 				if ($usernames)
 				{
 					$usernames = explode("\n", $usernames);
-					add_log('admin', 'LOG_MASS_EMAIL', implode($user->lang['COMMA_SEPARATOR'], utf8_normalize_nfc($usernames)));
+					add_log('admin', 'LOG_MASS_EMAIL', implode(', ', utf8_normalize_nfc($usernames)));
 				}
 				else
 				{
diff --git a/phpBB/includes/acp/acp_prune.php b/phpBB/includes/acp/acp_prune.php
index caa687f5ff..d867eb0297 100644
--- a/phpBB/includes/acp/acp_prune.php
+++ b/phpBB/includes/acp/acp_prune.php
@@ -273,7 +273,7 @@ class acp_prune
 						}
 					}
 
-					add_log('admin', $l_log, implode($user->lang['COMMA_SEPARATOR'], $usernames));
+					add_log('admin', $l_log, implode(', ', $usernames));
 					$msg = $user->lang['USER_' . strtoupper($action) . '_SUCCESS'];
 				}
 				else
diff --git a/phpBB/includes/functions_admin.php b/phpBB/includes/functions_admin.php
index db83913cb8..5d19cd7adb 100644
--- a/phpBB/includes/functions_admin.php
+++ b/phpBB/includes/functions_admin.php
@@ -439,7 +439,7 @@ function copy_forum_permissions($src_forum_id, $dest_forum_ids, $clear_dest_perm
 
 	if ($add_log)
 	{
-		add_log('admin', 'LOG_FORUM_COPIED_PERMISSIONS', $src_forum_name, implode($user->lang['COMMA_SEPARATOR'], $dest_forum_names));
+		add_log('admin', 'LOG_FORUM_COPIED_PERMISSIONS', $src_forum_name, implode(', ', $dest_forum_names));
 	}
 
 	$db->sql_transaction('commit');
diff --git a/phpBB/includes/functions_user.php b/phpBB/includes/functions_user.php
index de603ea9d6..6e658b4ef4 100644
--- a/phpBB/includes/functions_user.php
+++ b/phpBB/includes/functions_user.php
@@ -659,7 +659,7 @@ function user_ban($mode, $ban, $ban_len, $ban_len_other, $ban_exclude, $ban_reas
 	$db->sql_query($sql);
 
 	$ban_list = (!is_array($ban)) ? array_unique(explode("\n", $ban)) : $ban;
-	$ban_list_log = implode($user->lang['COMMA_SEPARATOR'], $ban_list);
+	$ban_list_log = implode(', ', $ban_list);
 
 	$current_time = time();
 
@@ -2923,7 +2923,7 @@ function group_user_add($group_id, $user_id_ary = false, $username_ary = false,
 
 	$log = ($leader) ? 'LOG_MODS_ADDED' : (($pending) ? 'LOG_USERS_PENDING' : 'LOG_USERS_ADDED');
 
-	add_log('admin', $log, $group_name, implode($user->lang['COMMA_SEPARATOR'], $username_ary));
+	add_log('admin', $log, $group_name, implode(', ', $username_ary));
 
 	group_update_listings($group_id);
 
@@ -3056,7 +3056,7 @@ function group_user_del($group_id, $user_id_ary = false, $username_ary = false,
 
 	if ($group_name)
 	{
-		add_log('admin', $log, $group_name, implode($user->lang['COMMA_SEPARATOR'], $username_ary));
+		add_log('admin', $log, $group_name, implode(', ', $username_ary));
 	}
 
 	group_update_listings($group_id);
@@ -3296,7 +3296,7 @@ function group_user_attributes($action, $group_id, $user_id_ary = false, $userna
 	// Clear permissions cache of relevant users
 	$auth->acl_clear_prefetch($user_id_ary);
 
-	add_log('admin', $log, $group_name, implode($user->lang['COMMA_SEPARATOR'], $username_ary));
+	add_log('admin', $log, $group_name, implode(', ', $username_ary));
 
 	group_update_listings($group_id);