diff --git a/core/views/expo.py b/core/views/expo.py
index be6700d..031bcee 100644
--- a/core/views/expo.py
+++ b/core/views/expo.py
@@ -283,7 +283,7 @@ def editexpopage(request, path):
 
     try:
         filepath = Path(settings.EXPOWEB) / path
-        o = open(filepath, "r")
+        o = open(filepath.encode(sysdefaultencoding), "r")
         html = o.read()
         autogeneratedmatch = re.search(r"\<\!--\s*(.*?(Do not edit|It is auto-generated).*?)\s*--\>", html, re.DOTALL + re.IGNORECASE)
         if autogeneratedmatch: