diff --git a/tests/phpunit/tests/ajax/Compression.php b/tests/phpunit/tests/ajax/Compression.php
index d82e0c54b9..e0ab837c07 100644
--- a/tests/phpunit/tests/ajax/Compression.php
+++ b/tests/phpunit/tests/ajax/Compression.php
@@ -25,7 +25,7 @@ class Tests_Ajax_CompressionTest extends WP_Ajax_UnitTestCase {
 		$_GET['test'] = 1;
 
 		// Make the request
-		$this->setExpectedException( 'WPAjaxDieStopException', '0' );
+		$this->setExpectedException( 'WPAjaxDieStopException', '-1' );
 		$this->_handleAjax( 'wp-compression-test' );
 	}
 
diff --git a/tests/phpunit/tests/ajax/TagSearch.php b/tests/phpunit/tests/ajax/TagSearch.php
index c8a621116a..43ea824fd2 100644
--- a/tests/phpunit/tests/ajax/TagSearch.php
+++ b/tests/phpunit/tests/ajax/TagSearch.php
@@ -68,7 +68,7 @@ class Tests_Ajax_TagSearch extends WP_Ajax_UnitTestCase {
 
 		// Make the request
 		// No output, so we get a stop exception
-		$this->setExpectedException( 'WPAjaxDieStopException', '0' );
+		$this->setExpectedException( 'WPAjaxDieStopException', '' );
 		$this->_handleAjax( 'ajax-tag-search' );
 	}