diff --git a/jedi/inference/value/module.py b/jedi/inference/value/module.py
index dfda34a4..6461cb4b 100644
--- a/jedi/inference/value/module.py
+++ b/jedi/inference/value/module.py
@@ -148,7 +148,7 @@ class ModuleValue(ModuleMixin, TreeValue):
         if file_io is None:
             self._path: Optional[Path] = None
         else:
-            self._path = Path(file_io.path)
+            self._path = file_io.path
         self.string_names = string_names  # Optional[Tuple[str, ...]]
         self.code_lines = code_lines
         self._is_package = is_package
diff --git a/test/test_api/test_completion.py b/test/test_api/test_completion.py
index 4b9b57f9..8e5ec3b2 100644
--- a/test/test_api/test_completion.py
+++ b/test/test_api/test_completion.py
@@ -412,7 +412,7 @@ def module_injector():
     def module_injector(inference_state, names, code):
         assert isinstance(names, tuple)
         file_io = KnownContentFileIO(
-            Path('/foo/bar/module-injector-%s.py' % next(counter)),
+            Path('foo/bar/module-injector-%s.py' % next(counter)).absolute(),
             code
         )
         v = _load_python_module(inference_state, file_io, names)