diff --git a/.changeset/chatty-plants-divide.md b/.changeset/chatty-plants-divide.md
new file mode 100644
index 00000000..db0eea0f
--- /dev/null
+++ b/.changeset/chatty-plants-divide.md
@@ -0,0 +1,5 @@
+---
+"@solidjs/router": patch
+---
+
+allow URLSearchParams type for when enctype is not set to multipart/form-data
diff --git a/src/data/action.ts b/src/data/action.ts
index c59f6824..dd13b03d 100644
--- a/src/data/action.ts
+++ b/src/data/action.ts
@@ -11,7 +11,7 @@ import type {
 import { mockBase } from "../utils.js";
 import { cacheKeyOp, hashKey, revalidate, query } from "./query.js";
 
-export type Action<T extends Array<any>, U, V = T> = (T extends [FormData] | []
+export type Action<T extends Array<any>, U, V = T> = (T extends [FormData | URLSearchParams] | []
   ? JSX.SerializableAttributeValue
   : unknown) &
   ((...vars: T) => Promise<NarrowResponse<U>>) & {