diff --git a/tests/integration/features/bootstrap/FeatureContext.php b/tests/integration/features/bootstrap/FeatureContext.php
index bfde040405..f0a79259fd 100644
--- a/tests/integration/features/bootstrap/FeatureContext.php
+++ b/tests/integration/features/bootstrap/FeatureContext.php
@@ -127,7 +127,7 @@ protected function beforeRequest(string $fullUrl, array $options): array {
 	protected function parseText(string $text): string {
 		$fields = $this->fields;
 		if (!empty($this->signer['sign_uuid'])) {
-			$fields[] = $this->signer['sign_uuid'];
+			$fields['SIGN_UUID'] = $this->signer['sign_uuid'];
 		}
 		$fields['BASE_URL'] = $this->baseUrl . '/index.php';
 		foreach ($fields as $key => $value) {