diff --git a/deno_dist/middleware/jsx/jsx-dev-runtime.ts b/deno_dist/middleware/jsx/jsx-dev-runtime.ts
index f1e8cc11..f041637d 100644
--- a/deno_dist/middleware/jsx/jsx-dev-runtime.ts
+++ b/deno_dist/middleware/jsx/jsx-dev-runtime.ts
@@ -4,7 +4,7 @@ import type { JSXNode } from './index.ts'
 export { Fragment } from './index.ts'
 
 export function jsxDEV(tag: string | Function, props: Record<string, unknown>): JSXNode {
-  const children = (props.children ?? []) as (string | HtmlEscapedString)
+  const children = (props.children ?? []) as string | HtmlEscapedString
   delete props['children']
-  return jsx(tag, props, children)
+  return Array.isArray(children) ? jsx(tag, props, ...children) : jsx(tag, props, children)
 }
diff --git a/src/middleware/jsx/jsx-dev-runtime.ts b/src/middleware/jsx/jsx-dev-runtime.ts
index 5e0cb11f..1ede3e8c 100644
--- a/src/middleware/jsx/jsx-dev-runtime.ts
+++ b/src/middleware/jsx/jsx-dev-runtime.ts
@@ -4,7 +4,7 @@ import type { JSXNode } from '.'
 export { Fragment } from '.'
 
 export function jsxDEV(tag: string | Function, props: Record<string, unknown>): JSXNode {
-  const children = (props.children ?? []) as (string | HtmlEscapedString)
+  const children = (props.children ?? []) as string | HtmlEscapedString
   delete props['children']
-  return jsx(tag, props, children)
+  return Array.isArray(children) ? jsx(tag, props, ...children) : jsx(tag, props, children)
 }
diff --git a/tsconfig.json b/tsconfig.json
index 214f5a6b..e70c66e9 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -24,6 +24,7 @@
   "include": [
     "src/**/*.ts",
     "src/**/*.mts",
-    "src/**/*.test.ts"
+    "src/**/*.test.ts",
+    "src/**/*.test.tsx"
   ],
 }
\ No newline at end of file