diff --git a/classes/ProductDownload.php b/classes/ProductDownload.php
index 9936e635a..a52441f62 100644
--- a/classes/ProductDownload.php
+++ b/classes/ProductDownload.php
@@ -299,10 +299,10 @@ class ProductDownloadCore extends ObjectModel
 	 */
 	public static function getNewFilename()
 	{
-		$ret = sha1(microtime());
-		if (file_exists(_PS_DOWNLOAD_DIR_.$ret))
-			$ret = ProductDownload::getNewFilename();
-		return $ret;
+		do {
+			$filename = sha1(microtime());
+		} while (file_exists(_PS_DOWNLOAD_DIR_.$filename));
+		return $filename;
 	}
 
 	/**
@@ -314,4 +314,4 @@ class ProductDownloadCore extends ObjectModel
 	{
 		return Configuration::get('PS_VIRTUAL_PROD_FEATURE_ACTIVE');
 	}
-}
\ No newline at end of file
+}