diff --git a/.prettierrc b/.prettierrc
index a7056f5..7acf4f0 100644
--- a/.prettierrc
+++ b/.prettierrc
@@ -1,3 +1,4 @@
 {
-  "semi": false
-}
\ No newline at end of file
+  "semi": false,
+  "printWidth": 100
+}
diff --git a/package.json b/package.json
index 07e5956..8ac0ab2 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "route-fn",
-  "version": "1.3.0",
+  "version": "1.3.1",
   "description": "A simple utility function for typesafe urls.",
   "license": "MIT",
   "type": "module",
diff --git a/src/index.ts b/src/index.ts
index 61a2650..4f1c3e2 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -15,14 +15,8 @@ export function createRouteFn<const Routes extends string[]>(routes: Routes) {
   type DynamicRouteId = ExtractDynamicRouteIds<Routes>[number]
   type StaticRouteId = ExtractStaticRouteIds<Routes>[number]
 
-  function fn<Id extends DynamicRouteId>(
-    id: Id,
-    params: RouteParams<Id>
-  ): string
-  function fn<Id extends StaticRouteId>(
-    id: Id,
-    params?: RouteParams<Id>
-  ): string
+  function fn<Id extends DynamicRouteId>(id: Id, params: RouteParams<Id>): string
+  function fn<Id extends StaticRouteId>(id: Id, params?: RouteParams<Id>): string
   function fn<Id extends DynamicRouteId | StaticRouteId>(
     id: Id,
     params?: RouteParams<Id> | SearchParams
@@ -70,9 +64,7 @@ export function createRouteFn<const Routes extends string[]>(routes: Routes) {
       return 0
     })
 
-    const patterns = sortedRoutes.map(
-      (route) => new URLPattern({ pathname: route })
-    )
+    const patterns = sortedRoutes.map((route) => new URLPattern({ pathname: route }))
 
     for (const pattern of patterns) {
       const patternResult = pattern.exec(input)
@@ -86,13 +78,11 @@ export function createRouteFn<const Routes extends string[]>(routes: Routes) {
 
   fn.test = function (
     url: string,
-    routeIds:
-      | StaticRouteId
-      | DynamicRouteId
-      | (StaticRouteId | DynamicRouteId)[]
+    routeIds: StaticRouteId | DynamicRouteId | (StaticRouteId | DynamicRouteId)[]
   ): boolean {
-    const routes = typeof routeIds === "string" ? [routeIds] : routeIds
-    for (const route of routes) {
+    const matchingRoutes = typeof routeIds === "string" ? [routeIds] : routeIds
+
+    const matchedRoutes = routes.filter((route) => {
       const urlWithOrigin = new URL(url, fakeOrigin).href
       const input = urlWithOrigin.split("?")[0]
 
@@ -101,8 +91,17 @@ export function createRouteFn<const Routes extends string[]>(routes: Routes) {
       if (pattern.test(input)) {
         return true
       }
-    }
-    return false
+
+      return false
+    })
+
+    // make sure some dynamic params are not conflicting
+    return (
+      matchedRoutes.length > 0 &&
+      matchedRoutes.every((route) =>
+        matchingRoutes.includes(route as StaticRouteId | DynamicRouteId)
+      )
+    )
   }
 
   fn.list = function (): Routes {
diff --git a/tests/index.test.ts b/tests/index.test.ts
index 65c76e9..1997aff 100644
--- a/tests/index.test.ts
+++ b/tests/index.test.ts
@@ -24,23 +24,15 @@ describe("route-fn", () => {
   it("should return the correct route with search params", () => {
     const route = createRouteFn(["/user/:id"])
 
-    expect(route("/user/:id", { id: 1, searchParams: { page: 0 } })).toBe(
-      "/user/1?page=0"
-    )
-    expect(route("/user/:id", { id: 1, searchParams: { page: 2 } })).toBe(
-      "/user/1?page=2"
-    )
+    expect(route("/user/:id", { id: 1, searchParams: { page: 0 } })).toBe("/user/1?page=0")
+    expect(route("/user/:id", { id: 1, searchParams: { page: 2 } })).toBe("/user/1?page=2")
   })
 
   it("should strip null or undefined search params", () => {
     const route = createRouteFn(["/user/:id"])
 
-    expect(route("/user/:id", { id: 1, searchParams: { page: null } })).toBe(
-      "/user/1"
-    )
-    expect(
-      route("/user/:id", { id: 1, searchParams: { page: undefined } })
-    ).toBe("/user/1")
+    expect(route("/user/:id", { id: 1, searchParams: { page: null } })).toBe("/user/1")
+    expect(route("/user/:id", { id: 1, searchParams: { page: undefined } })).toBe("/user/1")
   })
 
   it("should show type error when a param is missing", () => {
@@ -74,13 +66,11 @@ describe("route-fn.params", () => {
   })
 })
 
-describe("route-fn.match", () => {
+describe("route-fn.test", () => {
   it("should match the same url", () => {
     const route = createRouteFn(["/user/:id/settings/:page"])
 
-    expect(
-      route.test("/user/1/settings/2", "/user/:id/settings/:page")
-    ).toEqual(true)
+    expect(route.test("/user/1/settings/2", "/user/:id/settings/:page")).toEqual(true)
   })
 
   it("should match one of multiple test routes", () => {
@@ -96,15 +86,18 @@ describe("route-fn.match", () => {
   })
 
   it("should not match different route", () => {
-    const route = createRouteFn(["/user/:id/settings/:page"])
+    const route = createRouteFn([
+      "/:org",
+      "/:org/settings",
+      "/:org/settings/billing",
+      "/:org/:project",
+      "/:org/:project/posts",
+      "/:org/:project/settings",
+    ])
 
-    expect(route.test("/user", "/user/:id/settings/:page")).toEqual(false)
-    expect(route.test("/user/1", "/user/:id/settings/:page")).toEqual(false)
-    expect(route.test("/user/1/settings", "/user/:id/settings/:page")).toEqual(
-      false
-    )
-    expect(
-      route.test("/user/1/settings/2/posts", "/user/:id/settings/:page")
-    ).toEqual(false)
+    expect(route.test("/apple", "/:org/:project")).toEqual(false)
+    expect(route.test("/apple/settings", "/:org/:project")).toEqual(false)
+    expect(route.test("/apple/settings/billing", "/:org/:project/posts")).toEqual(false)
+    expect(route.test("/apple/settings/billing", "/:org/:project/settings")).toEqual(false)
   })
 })