diff --git a/library/relative.py b/library/relative.py
index 97f27e9a2c..de07b161ca 100644
--- a/library/relative.py
+++ b/library/relative.py
@@ -9,9 +9,9 @@ import re
 for x in sys.stdin:
   # HACK: rewrite Windows path to mingw path
   x = re.sub(r"^(\w):", lambda m: "/" + m[1].lower(), x).replace('\\', '/').strip()
+  curr = os.path.realpath(os.curdir)
+  curr = os.path.normpath(curr)
   if sys.platform == "darwin":
     # HACK: macos paths are case insensitive, but Python's normalization does not convert characters to lowercase
-    curr = os.path.realpath(os.curdir)
-    curr = os.path.normpath(curr)
     curr = curr.lower()
   print(os.path.relpath(x, curr))