diff --git a/lib/generate.js b/lib/generate.js
index bcebe0e5ab..b1d0797e7a 100644
--- a/lib/generate.js
+++ b/lib/generate.js
@@ -137,7 +137,7 @@ function resolveRouteParams (routeParams) {
   let promises = []
   Object.keys(routeParams).forEach(function (routePath) {
     let promise = promisifyRouteParams(routeParams[routePath])
-    .then((routeParamsData) => {
+    promise.then((routeParamsData) => {
       routeParams[routePath] = routeParamsData
     })
     .catch((e) => {