diff --git a/cmd/inbucket/main.go b/cmd/inbucket/main.go
index 88df1ab..ba37c09 100644
--- a/cmd/inbucket/main.go
+++ b/cmd/inbucket/main.go
@@ -125,7 +125,7 @@ func main() {
 	retentionScanner.Start()
 	// Start HTTP server.
 	web.Initialize(conf, shutdownChan, mmanager, msgHub)
-	rest.SetupRoutes(web.Router)
+	rest.SetupRoutes(web.Router.PathPrefix("/api/").Subrouter())
 	webui.SetupRoutes(web.Router)
 	go web.Start(rootCtx)
 	// Start POP3 server.
diff --git a/pkg/rest/routes.go b/pkg/rest/routes.go
index d622f3d..9c4305c 100644
--- a/pkg/rest/routes.go
+++ b/pkg/rest/routes.go
@@ -6,20 +6,20 @@ import "github.com/jhillyerd/inbucket/pkg/server/web"
 // SetupRoutes populates the routes for the REST interface
 func SetupRoutes(r *mux.Router) {
 	// API v1
-	r.Path("/api/v1/mailbox/{name}").Handler(
+	r.Path("/v1/mailbox/{name}").Handler(
 		web.Handler(MailboxListV1)).Name("MailboxListV1").Methods("GET")
-	r.Path("/api/v1/mailbox/{name}").Handler(
+	r.Path("/v1/mailbox/{name}").Handler(
 		web.Handler(MailboxPurgeV1)).Name("MailboxPurgeV1").Methods("DELETE")
-	r.Path("/api/v1/mailbox/{name}/{id}").Handler(
+	r.Path("/v1/mailbox/{name}/{id}").Handler(
 		web.Handler(MailboxShowV1)).Name("MailboxShowV1").Methods("GET")
-	r.Path("/api/v1/mailbox/{name}/{id}").Handler(
+	r.Path("/v1/mailbox/{name}/{id}").Handler(
 		web.Handler(MailboxMarkSeenV1)).Name("MailboxMarkSeenV1").Methods("PATCH")
-	r.Path("/api/v1/mailbox/{name}/{id}").Handler(
+	r.Path("/v1/mailbox/{name}/{id}").Handler(
 		web.Handler(MailboxDeleteV1)).Name("MailboxDeleteV1").Methods("DELETE")
-	r.Path("/api/v1/mailbox/{name}/{id}/source").Handler(
+	r.Path("/v1/mailbox/{name}/{id}/source").Handler(
 		web.Handler(MailboxSourceV1)).Name("MailboxSourceV1").Methods("GET")
-	r.Path("/api/v1/monitor/messages").Handler(
+	r.Path("/v1/monitor/messages").Handler(
 		web.Handler(MonitorAllMessagesV1)).Name("MonitorAllMessagesV1").Methods("GET")
-	r.Path("/api/v1/monitor/messages/{name}").Handler(
+	r.Path("/v1/monitor/messages/{name}").Handler(
 		web.Handler(MonitorMailboxMessagesV1)).Name("MonitorMailboxMessagesV1").Methods("GET")
 }
diff --git a/pkg/rest/testutils_test.go b/pkg/rest/testutils_test.go
index 67b7075..520532c 100644
--- a/pkg/rest/testutils_test.go
+++ b/pkg/rest/testutils_test.go
@@ -43,7 +43,6 @@ func setupWebServer(mm message.Manager) *bytes.Buffer {
 	log.SetOutput(buf)
 
 	// Have to reset default mux to prevent duplicate routes
-	http.DefaultServeMux = http.NewServeMux()
 	cfg := &config.Root{
 		Web: config.Web{
 			UIDir: "../ui",
@@ -51,7 +50,7 @@ func setupWebServer(mm message.Manager) *bytes.Buffer {
 	}
 	shutdownChan := make(chan bool)
 	web.Initialize(cfg, shutdownChan, mm, &msghub.Hub{})
-	SetupRoutes(web.Router)
+	SetupRoutes(web.Router.PathPrefix("/api/").Subrouter())
 
 	return buf
 }