diff --git a/config/level/guzzle/guzzle50.yml b/config/level/guzzle/guzzle50.yml
index 0c31d4eea05..335b180d44f 100644
--- a/config/level/guzzle/guzzle50.yml
+++ b/config/level/guzzle/guzzle50.yml
@@ -3,3 +3,7 @@ services:
         $functionToMethodCall:
             'GuzzleHttp\json_decode': ['GuzzleHttp\Utils', 'jsonDecode']
             'GuzzleHttp\get_path': ['GuzzleHttp\Utils': 'getPath']
+    Rector\Rector\StaticCall\StaticCallToFunctionRector:
+        $staticCallToFunction:
+            'GuzzleHttp\Utils::setPath': 'GuzzleHttp\set_path'
+            'GuzzleHttp\Pool::batch': 'GuzzleHttp\Pool\batch'
diff --git a/src/Rector/StaticCall/StaticCallToFunctionRector.php b/src/Rector/StaticCall/StaticCallToFunctionRector.php
index a6a254f8174..8f830d34cb3 100644
--- a/src/Rector/StaticCall/StaticCallToFunctionRector.php
+++ b/src/Rector/StaticCall/StaticCallToFunctionRector.php
@@ -14,7 +14,7 @@ use Rector\RectorDefinition\RectorDefinition;
 final class StaticCallToFunctionRector extends AbstractRector
 {
     /**
-     * @var string[][]
+     * @var string[]
      */
     private $staticCallToFunction = [];