diff --git a/src/Imgix/UrlBuilder.php b/src/Imgix/UrlBuilder.php
index f29039c..0272806 100644
--- a/src/Imgix/UrlBuilder.php
+++ b/src/Imgix/UrlBuilder.php
@@ -162,9 +162,8 @@ private function isDpr($params) {
         $hasHeight = array_key_exists('h', $params) ? $params['h'] : NULL;
         $hasAspectRatio = array_key_exists('ar', $params) ? $params['ar'] : NULL;
 
-        // If `params` have a width param or _both_ height and aspect
-        // ratio parameters then the srcset to be constructed with
-        // these params _is dpr based
+        // If `params` have a width or height parameter then the
+        // srcset to be constructed with these params _is dpr based
         return $hasWidth || $hasHeight;
     }