diff --git a/lib/class-wp-rest-oauth1.php b/lib/class-wp-rest-oauth1.php
index 1226731..742a709 100644
--- a/lib/class-wp-rest-oauth1.php
+++ b/lib/class-wp-rest-oauth1.php
@@ -678,6 +678,7 @@ public function check_oauth_signature( $consumer, $oauth_params, $token = null )
 
 			case 'POST':
 			case 'PUT':
+			case 'PATCH':
 				$params = wp_unslash( $_POST );
 				break;
 			default: