diff --git a/includes/class-fs-api.php b/includes/class-fs-api.php
index <HASH>..<HASH> 100755
--- a/includes/class-fs-api.php
+++ b/includes/class-fs-api.php
@@ -248,7 +248,7 @@
 							$this->_logger->warn( 'Fallback to cached API result: ' . var_export( $cached_result, true ) );

 						}

 					} else {

-					    if ( is_object( $result ) && 404 == $result->error->http ) {

+					    if ( is_object( $result ) && isset( $result->error->http ) && 404 == $result->error->http ) {

                             /**

                              * If the response code is 404, cache the result for half of the `$expiration`.

                              *
[api] Ensure that the result includes a response code when checking for "<I>" response.