diff --git a/devel-server.py b/devel-server.py
index 016a5d6..cca42a4 100755
--- a/devel-server.py
+++ b/devel-server.py
@@ -1,4 +1,4 @@
-#!/usr/bin/python3
+#!/usr/local/bin/python3
 
 import glob
 import http.server
@@ -100,7 +100,7 @@ you are a fool.
                 body.append("* [puzzles/{cat}/{points}](/puzzles/{cat}/{points}/)".format(cat=parts[2], points=puzzle))
         elif len(parts) == 4:
             body.append("# {} puzzle {}".format(parts[2], parts[3]))
-            with open("puzzles/{}/{}.moth".format(parts[2], parts[3])) as f:
+            with open("puzzles/{}/{}.moth".format(parts[2], parts[3]), encoding="utf-8") as f:
                 p = puzzles.Puzzle(f)
             body.append("* Author: `{}`".format(p.fields.get("author")))
             body.append("* Summary: `{}`".format(p.fields.get("summary")))
@@ -133,7 +133,8 @@ you are a fool.
         content = mdpage(text)
 
         self.send_response(HTTPStatus.OK)
-        self.send_header("Content-type", "text/html; encoding=utf-8")
+
+        self.send_header("Content-type", "text/html; charset=utf-8")
         self.send_header("Content-Length", len(content))
         try:
             fs = fspath.stat()