diff --git a/app/doorboy-proxy.py b/app/doorboy-proxy.py
index 26e5492..acf6f29 100755
--- a/app/doorboy-proxy.py
+++ b/app/doorboy-proxy.py
@@ -91,12 +91,13 @@ async def forward_swipe(request):
     if not key or key not in [DOORBOY_SECRET_FLOOR, DOORBOY_SECRET_WORKSHOP]:
         return text("Invalid token", status=401)
     data = request.json
-    doors = []
+    doors = set()
     if key == DOORBOY_SECRET_FLOOR:
-        doors.extend(["backdoor, frontdoor, grounddoor"])
+        doors.update(["backdoor", "frontdoor", "grounddoor"])
     if key == DOORBOY_SECRET_WORKSHOP:
-        doors.append("workshopdoor")
+        doors.add("workshopdoor")
     if data.get("door") not in doors:
+        print("Door", repr(data.get("door")), "not in", doors)
         return text("Not allowed", 403)
 
     async with httpx.AsyncClient() as client: