diff --git a/src/Pay/Adapter.php b/src/Pay/Adapter.php
index ae4ed87..5361ef5 100644
--- a/src/Pay/Adapter.php
+++ b/src/Pay/Adapter.php
@@ -224,10 +224,10 @@ protected function call(string $method, string $url, array $params = [], array $
 
         if ($responseStatus >= 400) {
             if (is_array($responseBody)) {
-                throw new \Exception('Error: '.json_encode($responseBody), $responseStatus);
+                throw new \Exception(json_encode($responseBody), $responseStatus);
             }
 
-            throw new \Exception('Error: '.$responseBody, $responseStatus);
+            throw new \Exception($responseBody, $responseStatus);
         }
 
         curl_close($ch);