diff --git a/src/Symfony/Component/HttpClient/HttpClientTrait.php b/src/Symfony/Component/HttpClient/HttpClientTrait.php
index 35af628dcc..373a6248a0 100644
--- a/src/Symfony/Component/HttpClient/HttpClientTrait.php
+++ b/src/Symfony/Component/HttpClient/HttpClientTrait.php
@@ -180,7 +180,7 @@ trait HttpClientTrait
             }
 
             if ('auth_ntlm' === $name) {
-                throw new InvalidArgumentException(sprintf('Option "%s" is not supported by %s, try using CurlHttpClient instead.', __CLASS__));
+                throw new InvalidArgumentException(sprintf('Option "auth_ntlm" is not supported by %s, try using CurlHttpClient instead.', __CLASS__));
             }
 
             throw new InvalidArgumentException(sprintf('Unsupported option "%s" passed to %s, did you mean "%s"?', $name, __CLASS__, implode('", "', $alternatives ?: array_keys($defaultOptions))));