diff --git a/voussoirkit/pathclass.py b/voussoirkit/pathclass.py
index 4d6f35b..2593e0f 100644
--- a/voussoirkit/pathclass.py
+++ b/voussoirkit/pathclass.py
@@ -122,12 +122,13 @@ class Path:
 
     def relative_to(self, other):
         other = Path(other)
-        other.correct_case()
-        self.correct_case()
 
         if self == other:
             return '.'
 
+        self.correct_case()
+        other.correct_case()
+
         if self in other:
             relative = self.absolute_path
             relative = relative.replace(other.absolute_path, '', 1)