diff --git a/src/installer/records.py b/src/installer/records.py
index 9bb45c7..b0adf88 100644
--- a/src/installer/records.py
+++ b/src/installer/records.py
@@ -106,8 +106,7 @@ def to_row(self, path_prefix: str | None = None) -> tuple[str, str, str]:
             path = self.path
 
         # Convert Windows paths to use / for consistency
-        if os.sep == "\\":
-            path = path.replace("\\", "/")  # pragma: no cover
+        path = path.replace("\\", "/")
 
         return (
             path,
diff --git a/tests/test_records.py b/tests/test_records.py
index a681608..eee3aa9 100644
--- a/tests/test_records.py
+++ b/tests/test_records.py
@@ -176,6 +176,11 @@ def test_string_representation_with_prefix(
         )
         assert record.to_row("prefix/") == expected_row
 
+    def test_to_row_normalizes_windows_path_on_any_platform(self):
+        record = RecordEntry.from_elements(r"package\module.py", "", "")
+
+        assert record.to_row() == ("package/module.py", "", "")
+
     def test_equality(self):
         record = RecordEntry.from_elements(
             "file.py",