diff --git a/src/cleveragents/tool/path_mapper.py b/src/cleveragents/tool/path_mapper.py
index cd6822787..30a31f238 100644
--- a/src/cleveragents/tool/path_mapper.py
+++ b/src/cleveragents/tool/path_mapper.py
@@ -183,7 +183,7 @@ def _relative_to(path: str, root: str) -> str:
     """Return the part of *path* relative to *root*.
 
     Uses :func:`posixpath.relpath` for canonical relative-path extraction,
-    consistent with :func:`_is_under`.  This avoids string-slicing prefix‑collision
+    consistent with :func:`_is_under`.  This avoids string-slicing prefix-collision
     attacks where an attacker filename is a literal prefix of the sandbox root
     (see issue #7478).