Index: wp-includes/rest-api/endpoints/class-wp-rest-terms-controller.php
===================================================================
--- wp-includes/rest-api/endpoints/class-wp-rest-terms-controller.php	(revision 39408)
+++ wp-includes/rest-api/endpoints/class-wp-rest-terms-controller.php	(working copy)
@@ -457,7 +457,7 @@
 		}
 
 		if ( ! current_user_can( 'edit_term', $term->term_id ) ) {
-			return new WP_Error( 'rest_cannot_update', __( 'Sorry, you are not allowed to edit terms.' ), array( 'status' => rest_authorization_required_code() ) );
+			return new WP_Error( 'rest_cannot_update', __( 'Sorry, you are not allowed to edit this term.' ), array( 'status' => rest_authorization_required_code() ) );
 		}
 
 		return true;