diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4bebb6dd..b1d1516f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,7 @@ and adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
 
 ## Unreleased
 
+- [#299](https://github.com/Shopify/shopify-api-php/pull/299) [Patch] Fix Scopes constructor to be able to handle null parameter
 - [#297](https://github.com/Shopify/shopify-api-php/pull/297) [Patch] Fix CustomerAddress methods, FulfillmentRequest save method
 
 ## v5.1.0 - 2023-07-11
diff --git a/src/Auth/Scopes.php b/src/Auth/Scopes.php
index 5b8958e8..3bd5a718 100644
--- a/src/Auth/Scopes.php
+++ b/src/Auth/Scopes.php
@@ -21,7 +21,7 @@ public function __construct($scopes)
         if (is_string($scopes)) {
             $scopesArray = explode(self::SCOPE_DELIMITER, $scopes);
         } else {
-            $scopesArray = $scopes;
+            $scopesArray = $scopes ?? [];
         }
 
         $scopesArray = array_unique(array_filter(array_map('trim', $scopesArray)));