diff --git a/Cdn_Plugin.php b/Cdn_Plugin.php
index 36f95f7..408b1da 100644
--- a/Cdn_Plugin.php
+++ b/Cdn_Plugin.php
@@ -1219,7 +1219,7 @@ function _minify_auto_pushcdn_link_replace_callback( $matches ) {
 
 	function get_replaced_urls() {
 		$strings = array();
-		if ( count( $this->_replaced_urls ) ) {
+		if ( $this->_replaced_urls && count($this->_replaced_urls) ) {
 			$strings[] = "Replaced URLs:";
 
 			foreach ( $this->_replaced_urls as $old_url => $new_url ) {