diff --git a/pydsdl/_dsdl_definition.py b/pydsdl/_dsdl_definition.py
index 93addb1..bda5eb4 100644
--- a/pydsdl/_dsdl_definition.py
+++ b/pydsdl/_dsdl_definition.py
@@ -33,9 +33,9 @@ class DSDLDefinition:
 
     def __init__(self, file_path: Path, root_namespace_path: Path):
         # Normalizing the path and reading the definition text
-        self._file_path = Path(file_path).resolve()
+        self._file_path = Path(file_path)
         del file_path
-        self._root_namespace_path = Path(root_namespace_path).resolve()
+        self._root_namespace_path = Path(root_namespace_path)
         del root_namespace_path
         with open(self._file_path) as f:
             self._text = str(f.read())
@@ -48,7 +48,7 @@ def __init__(self, file_path: Path, root_namespace_path: Path):
         relative_path = str(
             os.path.join(
                 os.path.split(self._root_namespace_path)[-1],
-                os.path.relpath(self._file_path, self._root_namespace_path),
+                self._file_path.relative_to(self._root_namespace_path),
             )
         )
 
diff --git a/pydsdl/_namespace.py b/pydsdl/_namespace.py
index b6f19c8..0d0bc97 100644
--- a/pydsdl/_namespace.py
+++ b/pydsdl/_namespace.py
@@ -440,7 +440,7 @@ def on_walk_error(os_ex: Exception) -> None:
     for root, _dirnames, filenames in walker:
         for glb in _DSDL_FILE_GLOBS:
             for filename in fnmatch.filter(filenames, glb):
-                source_file_paths.add(Path(root, filename).resolve())
+                source_file_paths.add(Path(root, filename))
 
     output = []  # type: List[_dsdl_definition.DSDLDefinition]
     for fp in sorted(source_file_paths):
diff --git a/pydsdl/_test.py b/pydsdl/_test.py
index ddc6f3f..2872f80 100644
--- a/pydsdl/_test.py
+++ b/pydsdl/_test.py
@@ -70,8 +70,8 @@ def _unittest_define() -> None:
     assert d.full_name == "uavcan.test.Message"
     assert d.version == (1, 2)
     assert d.fixed_port_id == 5000
-    assert d.file_path == Path(_DIRECTORY.name, "uavcan", "test", "5000.Message.1.2.dsdl").resolve()
-    assert d.root_namespace_path == Path(_DIRECTORY.name, "uavcan").resolve()
+    assert d.file_path.samefile(Path(_DIRECTORY.name, "uavcan", "test", "5000.Message.1.2.dsdl"))
+    assert d.root_namespace_path.samefile(Path(_DIRECTORY.name, "uavcan"))
     assert open(d.file_path).read() == "# empty"
 
     # BUT WHEN I DO, I WRITE UNIT TESTS FOR MY UNIT TESTS
@@ -79,8 +79,8 @@ def _unittest_define() -> None:
     assert d.full_name == "uavcan.Service"
     assert d.version == (255, 254)
     assert d.fixed_port_id is None
-    assert d.file_path == Path(_DIRECTORY.name, "uavcan", "Service.255.254.dsdl").resolve()
-    assert d.root_namespace_path == Path(_DIRECTORY.name, "uavcan").resolve()
+    assert d.file_path.samefile(Path(_DIRECTORY.name, "uavcan", "Service.255.254.dsdl"))
+    assert d.root_namespace_path.samefile(Path(_DIRECTORY.name, "uavcan"))
     assert open(d.file_path).read() == "# empty 2"