diff --git a/manifest.toml b/manifest.toml
index b053668..e211e73 100644
--- a/manifest.toml
+++ b/manifest.toml
@@ -47,7 +47,7 @@ ram.runtime = "50M"
         sha256 = "2f3a7f6159d1329e3c9b63edd3e34082c72a155774f396418a34a56a81f1184a"
         in_subdir = false
         extract = false
-        SOURCE_FILENAME="prober.php"
+        rename = "prober.php"
 
     [resources.system_user]