diff --git a/share/tools/web_config/webconfig.py b/share/tools/web_config/webconfig.py
index 9a308a11a..c77d69b26 100755
--- a/share/tools/web_config/webconfig.py
+++ b/share/tools/web_config/webconfig.py
@@ -751,7 +751,8 @@ class FishConfigHTTPRequestHandler(SimpleHTTPServer.SimpleHTTPRequestHandler):
 
         # Return valid output
         self.send_response(200)
-        self.send_header('Content-type','text/html')
+        self.send_header('Content-type','application/json')
+        self.end_headers()
         self.write_to_wfile('\n')
 
         # Output JSON