diff --git a/mod/webserver.py b/mod/webserver.py
index 808c8532..5bde926a 100644
--- a/mod/webserver.py
+++ b/mod/webserver.py
@@ -2223,6 +2223,9 @@ def _get_dir_and_extensions_for_filetype(kls, filetype):
         elif filetype == "nammodel":
             return ("NAM Models", (".nam",))
 
+        elif filetype == "easyspinprog":
+            return ("Easy Spin Programs", (".json",".bin",))
+
         else:
             return (None, ())