diff --git a/src/Htmxor/Http/HtmxResponse.cs b/src/Htmxor/Http/HtmxResponse.cs
index e47c4c4..6f49786 100644
--- a/src/Htmxor/Http/HtmxResponse.cs
+++ b/src/Htmxor/Http/HtmxResponse.cs
@@ -161,7 +161,7 @@ public HtmxResponse Reswap(SwapStyle swapStyle, string? modifier = null)
 
         if (swapStyle is SwapStyle.Default)
         {
-            Reswap(modifier);
+            Reswap(modifier!);
             return this;
         }