diff --git a/.changeset/honest-schools-worry.md b/.changeset/honest-schools-worry.md
new file mode 100644
index 000000000000..f8930d63ae9e
--- /dev/null
+++ b/.changeset/honest-schools-worry.md
@@ -0,0 +1,5 @@
+---
+'astro': patch
+---
+
+Check null for props serialization
diff --git a/packages/astro/src/runtime/server/serialize.ts b/packages/astro/src/runtime/server/serialize.ts
index d15b22ea4a81..59ce96d8ded1 100644
--- a/packages/astro/src/runtime/server/serialize.ts
+++ b/packages/astro/src/runtime/server/serialize.ts
@@ -48,7 +48,7 @@ function convertToSerializedForm(value: any): [ValueOf<typeof PROP_TYPE>, any] {
 			return [PROP_TYPE.JSON, JSON.stringify(serializeArray(value))];
 		}
 		default: {
-			if (typeof value === 'object') {
+			if (value !== null && typeof value === 'object') {
 				return [PROP_TYPE.Value, serializeObject(value)];
 			} else {
 				return [PROP_TYPE.Value, value];