diff --git a/tests/phpunit/tests/pluggable.php b/tests/phpunit/tests/pluggable.php
index 82c6ab16e8..276c021f70 100644
--- a/tests/phpunit/tests/pluggable.php
+++ b/tests/phpunit/tests/pluggable.php
@@ -102,7 +102,7 @@ class Tests_Pluggable extends WP_UnitTestCase {
 		}
 
 		foreach ( $test_files as $file ) {
-			preg_match_all( '#^function (\w+)#m', file_get_contents( ABSPATH . '/' . $file ), $functions );
+			preg_match_all( '#^\t?function (\w+)#m', file_get_contents( ABSPATH . '/' . $file ), $functions );
 
 			foreach ( $functions[1] as $function ) {
 				$data[] = array(
diff --git a/tests/phpunit/tests/user/capabilities.php b/tests/phpunit/tests/user/capabilities.php
index 7e588c3c23..317553a25d 100644
--- a/tests/phpunit/tests/user/capabilities.php
+++ b/tests/phpunit/tests/user/capabilities.php
@@ -401,7 +401,7 @@ class Tests_User_Capabilities extends WP_UnitTestCase {
 		$this->assertSame( 1, $matched );
 		$this->assertNotEmpty( $function );
 
-		$matched = preg_match_all( '/^[\t]case \'([^\']+)/m', $function[0], $cases );
+		$matched = preg_match_all( '/^[\t]{1,2}case \'([^\']+)/m', $function[0], $cases );
 		$this->assertNotEmpty( $matched );
 		$this->assertNotEmpty( $cases );