diff --git a/lib/ApiRequestor.php b/lib/ApiRequestor.php
index b2fa192377..7162e33b53 100644
--- a/lib/ApiRequestor.php
+++ b/lib/ApiRequestor.php
@@ -295,9 +295,8 @@ private static function _formatAppInfo($appInfo)
     /**
      * @static
      *
-     * @param string $disabledFunctionsOutput - String value of the 'disable_function' setting, as output by \ini_get('disable_functions')
+     * @param string $disableFunctionsOutput - String value of the 'disable_function' setting, as output by \ini_get('disable_functions')
      * @param string $functionName - Name of the function we are interesting in seeing whether or not it is disabled
-     * @param mixed $disableFunctionsOutput
      *
      * @return bool
      */
@@ -474,8 +473,7 @@ private function _requestRaw($method, $url, $params, $headers)
      * @param string $url
      * @param array $params
      * @param array $headers
-     * @param callable $readBodyChunk
-     * @param mixed $readBodyChunkCallable
+     * @param callable $readBodyChunkCallable
      *
      * @throws Exception\AuthenticationException
      * @throws Exception\ApiConnectionException
diff --git a/lib/Invoice.php b/lib/Invoice.php
index 7078728105..fc0c9dcf77 100644
--- a/lib/Invoice.php
+++ b/lib/Invoice.php
@@ -155,7 +155,7 @@ class Invoice extends ApiResource
      * @param null|array $params
      * @param null|array|string $opts
      *
-     * @throws StripeExceptionApiErrorException if the request fails
+     * @throws \Stripe\Exception\ApiErrorException if the request fails
      *
      * @return \Stripe\Collection<\Stripe\InvoiceLineItem> the list of lines (InvoiceLineItem)
      */
diff --git a/lib/Service/SourceService.php b/lib/Service/SourceService.php
index c6cc059646..403f328911 100644
--- a/lib/Service/SourceService.php
+++ b/lib/Service/SourceService.php
@@ -13,7 +13,7 @@ class SourceService extends \Stripe\Service\AbstractService
      *
      * @throws \Stripe\Exception\ApiErrorException if the request fails
      *
-     * @return \Stripe\Source
+     * @return \Stripe\Collection<\Stripe\SourceTransaction>
      */
     public function allTransactions($id, $params = null, $opts = null)
     {