diff --git a/backend/windmill-worker/src/python_executor.rs b/backend/windmill-worker/src/python_executor.rs
index b5cd49822e..98e1483421 100644
--- a/backend/windmill-worker/src/python_executor.rs
+++ b/backend/windmill-worker/src/python_executor.rs
@@ -1395,12 +1395,12 @@ async fn prepare_wrapper(
                     } else {
                         format!(
                             r#"pre_args["{name}"] = kwargs.get("{name}")
-    if pre_args["{name}"] is None:
-        del pre_args["{name}"]"#
+        if pre_args["{name}"] is None:
+            del pre_args["{name}"]"#
                         )
                     }
                 })
-                .join("\n    ")
+                .join("\n        ")
         };
         Some(spread)
     } else {