diff --git a/linkcheck/checker/fileurl.py b/linkcheck/checker/fileurl.py
index 8f0134e3..e0450f07 100644
--- a/linkcheck/checker/fileurl.py
+++ b/linkcheck/checker/fileurl.py
@@ -54,7 +54,7 @@ def prepare_urlpath_for_nt(path):
 
 def get_nt_filename(path):
     """Return case sensitive filename for NT path."""
-    unc, rest = os.path.splitunc(path)
+    unc, rest = os.path.splitdrive(path)
     head, tail = os.path.split(rest)
     if not tail:
         return path