diff --git a/import2ledger/__main__.py b/import2ledger/__main__.py
index 3d50e214ac31893670a8ff8bba80dc514c72a4f2..14a829461d354f590b0c469165c6edc36e4f359e 100644
--- a/import2ledger/__main__.py
+++ b/import2ledger/__main__.py
@@ -37,7 +37,7 @@ class FileImporter:
         source_vars = {
             'source_abspath': in_path.absolute().as_posix(),
             'source_absdir': in_path.absolute().parent.as_posix(),
-            'source_dir': in_path.parent,
+            'source_dir': in_path.parent.as_posix(),
             'source_name': in_path.name,
             'source_path': in_path.as_posix(),
             'source_stem': in_path.stem,