diff --git a/tests/phpunit/tests/avatar.php b/tests/phpunit/tests/avatar.php
index 0bb60920a1..5b35fe45aa 100755
--- a/tests/phpunit/tests/avatar.php
+++ b/tests/phpunit/tests/avatar.php
@@ -158,7 +158,7 @@ class Tests_Avatar extends WP_UnitTestCase {
 
 	public function test_get_avatar() {
 		$img = get_avatar( 1 );
-		$this->assertEquals( preg_match( "|^<img alt='[^']*' src='[^']*' class='[^']*' height='[^']*' width='[^']*' />$|", $img ), 1 );
+		$this->assertEquals( preg_match( "|^<img alt='[^']*' src='[^']*' srcset='[^']*' class='[^']*' height='[^']*' width='[^']*' />$|", $img ), 1 );
 	}
 
 	public function test_get_avatar_size() {