diff --git a/fabcal/routers/frontend.py b/fabcal/routers/frontend.py
index bd5cf42..cae7597 100644
--- a/fabcal/routers/frontend.py
+++ b/fabcal/routers/frontend.py
@@ -40,9 +40,19 @@ async def generate_response(request: Request, template_name: str, **additional_c
 
 @router.get("/sidebar/embed.html", response_class=HTMLResponse)
 async def embed_sidebar(request: Request, max_days: int = None):
-    return await generate_response(request, "sidebar/embed.html", max_days=int(max_days))
+    try:
+        max_days = int(max_days)
+    except TypeError:
+        pass
+
+    return await generate_response(request, "sidebar/embed.html", max_days=max_days)
 
 
 @router.get("/sidebar/demo.html", response_class=HTMLResponse)
 async def sidebar_demo(request: Request, max_days: int = None):
-    return await generate_response(request, "sidebar/demo.html", max_days=int(max_days))
+    try:
+        max_days = int(max_days)
+    except TypeError:
+        pass
+
+    return await generate_response(request, "sidebar/demo.html", max_days=max_days)