diff --git a/svn_mirror/git_to_svn.py b/svn_mirror/git_to_svn.py
index ce31155..a9c21de 100644
--- a/svn_mirror/git_to_svn.py
+++ b/svn_mirror/git_to_svn.py
@@ -96,7 +96,7 @@ def _run_svn(args: list, input: bytes = None, timeout: int = 120,
     """Run an svn command.  If *wc* is given, run from that directory."""
     if auth_args:
         args = auth_args + args
-    env = {**os.environ, "LC_ALL": "C"}
+    env = {**os.environ, "LC_ALL": "C.UTF-8"}
     try:
         r = subprocess.run(
             ["svn"] + args,