diff --git a/plugins/woocommerce/src/Internal/Admin/Logging/FileV2/FileController.php b/plugins/woocommerce/src/Internal/Admin/Logging/FileV2/FileController.php
index 21f28dec15d..53efe63021c 100644
--- a/plugins/woocommerce/src/Internal/Admin/Logging/FileV2/FileController.php
+++ b/plugins/woocommerce/src/Internal/Admin/Logging/FileV2/FileController.php
@@ -183,7 +183,7 @@ class FileController {
 	 *
 	 * @return int
 	 */
-	public function delete_files( $files ): int {
+	public function delete_files( array $files ): int {
 		$deleted = 0;
 
 		foreach ( $files as $basename ) {