diff --git a/src/python/jw/pkg/lib/FileContext.py b/src/python/jw/pkg/lib/FileContext.py
index 2622e7e8..08d2e89f 100644
--- a/src/python/jw/pkg/lib/FileContext.py
+++ b/src/python/jw/pkg/lib/FileContext.py
@@ -221,7 +221,7 @@ class FileContext(abc.ABC):
         raise NotImplementedError(f'{self.log_name}: mkdir({path}) is not implemented')
 
     async def mkdir(self, path: str, mode: int = 0o777) -> None:
-        return await self._mkdir(path, mode)
+        return await self._mkdir(self._chroot(path), mode)
 
     async def _mktemp(self, tmpl: str, directory: bool) -> str:
         raise NotImplementedError(