diff --git a/tests/phpunit/tests/admin/includesComment.php b/tests/phpunit/tests/admin/includesComment.php
index 2b3d915ec1..5b7b01b904 100644
--- a/tests/phpunit/tests/admin/includesComment.php
+++ b/tests/phpunit/tests/admin/includesComment.php
@@ -6,17 +6,21 @@
  */
 class Tests_Admin_IncludesComment extends WP_UnitTestCase {
 	public function test_must_match_date_and_author() {
+		$p1 = $this->factory->post->create();
 		$c1 = $this->factory->comment->create( array(
-			'comment_author' => 'foo',
+			'comment_author' => 1,
 			'comment_date' => '2014-05-06 12:00:00',
+			'comment_post_ID' => $p1,
 		) );
 
+		$p2 = $this->factory->post->create();
 		$c2 = $this->factory->comment->create( array(
-			'comment_author' => 'bar',
+			'comment_author' => 2,
 			'comment_date' => '2004-01-02 12:00:00',
+			'comment_post_ID' => $p2,
 		) );
 
-		$this->assertNull( comment_exists( 'foo', '2004-01-02 12:00:00' ) );
-		$this->assertEquals( $c1, comment_exists( 'foo', '2014-05-06 12:00:00' ) );
+		$this->assertNull( comment_exists( 1, '2004-01-02 12:00:00' ) );
+		$this->assertEquals( $p1, comment_exists( 1, '2014-05-06 12:00:00' ) );
 	}
 }