diff --git a/api/router/router.go b/api/router/router.go
index 63595f3..90bdf1e 100644
--- a/api/router/router.go
+++ b/api/router/router.go
@@ -80,6 +80,7 @@ func NewAPIRouter() *APIRouter {
 	return &APIRouter{
 		apis:        make(map[string]RoutableAPI),
 		apiHandlers: make(map[string]http.Handler),
+		apiDomain:   make(map[string]string),
 	}
 }