diff --git a/.changeset/moody-students-report.md b/.changeset/moody-students-report.md
new file mode 100644
index 000000000000..bf70be4041de
--- /dev/null
+++ b/.changeset/moody-students-report.md
@@ -0,0 +1,5 @@
+---
+'@sveltejs/kit': patch
+---
+
+fix `<Route> received an unexpected slot "default"` warning
diff --git a/packages/kit/src/core/create_app/index.js b/packages/kit/src/core/create_app/index.js
index 33ad744e12b3..62d43217b29d 100644
--- a/packages/kit/src/core/create_app/index.js
+++ b/packages/kit/src/core/create_app/index.js
@@ -130,11 +130,13 @@ function generate_app(manifest_data) {
 
 	while (l--) {
 		pyramid = `
-			<svelte:component this={components[${l}]} {...(props_${l} || {})}>
-				{#if components[${l + 1}]}
+			{#if components[${l + 1}]}
+				<svelte:component this={components[${l}]} {...(props_${l} || {})}>				
 					${pyramid.replace(/\n/g, '\n\t\t\t\t\t')}
-				{/if}
-			</svelte:component>
+				</svelte:component>
+			{:else}
+				<svelte:component this={components[${l}]} {...(props_${l} || {})} />
+			{/if}
 		`
 			.replace(/^\t\t\t/gm, '')
 			.trim();