diff --git a/.changeset/dirty-rockets-fry.md b/.changeset/dirty-rockets-fry.md
new file mode 100644
index 000000000000..56c847e9f600
--- /dev/null
+++ b/.changeset/dirty-rockets-fry.md
@@ -0,0 +1,5 @@
+---
+'@sveltejs/kit': patch
+---
+
+[fix] throw error when using enhance on GET forms
diff --git a/packages/kit/src/runtime/app/forms.js b/packages/kit/src/runtime/app/forms.js
index 7a0f97539f1f..1cc3b723c61d 100644
--- a/packages/kit/src/runtime/app/forms.js
+++ b/packages/kit/src/runtime/app/forms.js
@@ -27,6 +27,10 @@ export function deserialize(result) {
 
 /** @type {import('$app/forms').enhance} */
 export function enhance(form, submit = () => {}) {
+	if (__SVELTEKIT_DEV__ && form.method !== 'post') {
+		throw new Error('use:enhance can only be used on <form> fields with method="POST"');
+	}
+
 	/**
 	 * @param {{
 	 *   action: URL;