diff --git a/inc/Data/Driver/HttpDriver.php b/inc/Data/Driver/HttpDriver.php
index 197f2681..2e379f27 100644
--- a/inc/Data/Driver/HttpDriver.php
+++ b/inc/Data/Driver/HttpDriver.php
@@ -43,7 +43,7 @@ class HttpDriver {
 	 * @return string Returns the body of the response.
 	 * @throws RuntimeException Throws on IO error.
 	 */
-	public function requestGet(string $endpoint, ?array $data, ?array $headers, int $timeout = 0): string {
+	public function requestGet(string $endpoint, ?array $data, ?array $headers = null, int $timeout = 0): string {
 		if (!empty($data)) {
 			$endpoint .= '?' . \http_build_query($data);
 		}