diff --git a/includes/class-http.php b/includes/class-http.php
index 01c2042..798328b 100644
--- a/includes/class-http.php
+++ b/includes/class-http.php
@@ -43,7 +43,7 @@ class Http {
 		$response = \wp_safe_remote_post( $url, $args );
 		$code     = \wp_remote_retrieve_response_code( $response );
 
-		if ( 400 >= $code && 500 <= $code ) {
+		if ( 400 <= $code && 500 >= $code ) {
 			$response = new WP_Error( $code, __( 'Failed HTTP Request', 'activitypub' ) );
 		}
 
@@ -82,7 +82,7 @@ class Http {
 		$response = \wp_safe_remote_get( $url, $args );
 		$code     = \wp_remote_retrieve_response_code( $response );
 
-		if ( 400 >= $code && 500 <= $code ) {
+		if ( 400 <= $code && 500 >= $code ) {
 			$response = new WP_Error( $code, __( 'Failed HTTP Request', 'activitypub' ) );
 		}