diff --git a/src/StaticPHP/Artifact/Downloader/Type/GitHubTokenSetupTrait.php b/src/StaticPHP/Artifact/Downloader/Type/GitHubTokenSetupTrait.php
index 412a4c1c..1850cd5b 100644
--- a/src/StaticPHP/Artifact/Downloader/Type/GitHubTokenSetupTrait.php
+++ b/src/StaticPHP/Artifact/Downloader/Type/GitHubTokenSetupTrait.php
@@ -14,17 +14,18 @@ trait GitHubTokenSetupTrait
     public static function getGitHubTokenHeadersStatic(): array
     {
         // GITHUB_TOKEN support
-        if (($token = getenv('GITHUB_TOKEN')) !== false && ($user = getenv('GITHUB_USER')) !== false) {
+        $token = getenv('GITHUB_TOKEN');
+        if ($token === false || $token === '') {
+            return [];
+        }
+        if (($user = getenv('GITHUB_USER')) !== false && $user !== '') {
             logger()->debug("Using 'GITHUB_TOKEN' with user {$user} for authentication");
             $encoded = base64_encode("{$user}:{$token}");
             spc_add_log_filter([$user, $token, $encoded]);
             return ["Authorization: Basic {$encoded}"];
         }
-        if (($token = getenv('GITHUB_TOKEN')) !== false) {
-            logger()->debug("Using 'GITHUB_TOKEN' for authentication");
-            spc_add_log_filter($token);
-            return ["Authorization: Bearer {$token}"];
-        }
-        return [];
+        logger()->debug("Using 'GITHUB_TOKEN' for authentication");
+        spc_add_log_filter($token);
+        return ["Authorization: Bearer {$token}"];
     }
 }