diff --git a/BTCPayServer/Extensions.cs b/BTCPayServer/Extensions.cs
index bb5f5d0bb..4b706fe32 100644
--- a/BTCPayServer/Extensions.cs
+++ b/BTCPayServer/Extensions.cs
@@ -168,6 +168,8 @@ namespace BTCPayServer
 
         public static bool IsOnion(this HttpRequest request)
         {
+            if (request?.Host.Host == null)
+                return false;
             return request.Host.Host.EndsWith(".onion", StringComparison.OrdinalIgnoreCase);
         }