diff --git a/php/src/Docker/DockerActionManager.php b/php/src/Docker/DockerActionManager.php
index 91826f46..c0af8e0a 100644
--- a/php/src/Docker/DockerActionManager.php
+++ b/php/src/Docker/DockerActionManager.php
@@ -821,7 +821,7 @@ readonly class DockerActionManager {
         if ($outputCallback !== null) {
             $body = $startResponse->getBody();
             while (!$body->eof()) {
-                $line = rtrim(Utils::readLine($pullBody), "\r");;
+                $line = rtrim(Utils::readLine($body), "\r");;
                 if ($line !== '') {
                     $outputCallback($line);
                 }