diff --git a/wp-includes/compat.php b/wp-includes/compat.php
index f9df28eac9..38ae725e93 100644
--- a/wp-includes/compat.php
+++ b/wp-includes/compat.php
@@ -488,7 +488,7 @@ if ( ! function_exists( 'str_ends_with' ) ) {
 
 		$len = strlen( $needle );
 
-		return 0 === substr_compare( $haystack, $needle, -$len, $len );
+		return $needle === substr( $haystack, -$len, $len );
 	}
 }
 
diff --git a/wp-includes/version.php b/wp-includes/version.php
index c41589188d..bd09b38b20 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -16,7 +16,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '6.3-alpha-56014';
+$wp_version = '6.3-alpha-56015';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.