diff --git a/.changeset/stupid-houses-hammer.md b/.changeset/stupid-houses-hammer.md
new file mode 100644
index 0000000..a3ae8d9
--- /dev/null
+++ b/.changeset/stupid-houses-hammer.md
@@ -0,0 +1,5 @@
+---
+"hono-og": patch
+---
+
+Fixed nullish JSX.
diff --git a/src/utils/toReactNode.ts b/src/utils/toReactNode.ts
index 4096123..83ce03c 100644
--- a/src/utils/toReactNode.ts
+++ b/src/utils/toReactNode.ts
@@ -18,6 +18,7 @@ export function toReactNode<
 >(jsx_: jsx): returnType {
   const jsx = jsx_ as Exclude<Child, Promise<string>>;
 
+  if (!jsx) return null as returnType;
   if (Array.isArray(jsx))
     return jsx.map((child) => toReactNode(child)) as returnType;
   if (typeof jsx === "string") return jsx as returnType;