diff --git a/phpBB/includes/functions_posting.php b/phpBB/includes/functions_posting.php
index e21b8d4e8c..0b37af0ee0 100644
--- a/phpBB/includes/functions_posting.php
+++ b/phpBB/includes/functions_posting.php
@@ -2489,7 +2489,7 @@ function phpbb_bump_topic($forum_id, $topic_id, $post_data, $bump_time = false)
 /**
 * Show upload popup (progress bar)
 */
-function upload_popup($forum_style = 0)
+function phpbb_upload_popup($forum_style = 0)
 {
 	global $template, $user;
 
diff --git a/phpBB/posting.php b/phpBB/posting.php
index dedd393858..70df052099 100644
--- a/phpBB/posting.php
+++ b/phpBB/posting.php
@@ -195,7 +195,7 @@ switch ($mode)
 		}
 		else
 		{
-			upload_popup();
+			phpbb_upload_popup();
 			return;
 		}
 	break;
@@ -233,7 +233,7 @@ if ($auth->acl_get('m_approve', $forum_id) && ((($mode == 'reply' || $mode == 'b
 
 if ($mode == 'popup')
 {
-	upload_popup($post_data['forum_style']);
+	phpbb_upload_popup($post_data['forum_style']);
 	return;
 }