diff --git a/src/notehub/api.clj b/src/notehub/api.clj
index 1c9cf14..7f0f5b5 100644
--- a/src/notehub/api.clj
+++ b/src/notehub/api.clj
@@ -46,7 +46,7 @@
   (map #(+ (second %) (.get (Calendar/getInstance) (first %)))
        {Calendar/YEAR 0, Calendar/MONTH 1, Calendar/DAY_OF_MONTH 0}))
 
-(defn create-response
+(defn- create-response
   ([success] {:success success})
   ([success message & params]
    (assoc (create-response success) :message (apply format message params))))
@@ -59,6 +59,13 @@
         (str domain "/" (storage/create-short-url token {:year year :month month :day day :title title}))
         (str domain (url year month day title))))))
 
+(defn version-manager [f params]
+  (if-let [version (:version params)]
+    (f (if (and (:noteID params) (< (Double/parseDouble version) 1.3))
+         (assoc params :noteID (sreplace (params :noteID) #" " "/"))
+         params))
+    (create-response false "API version expected")))
+
 (defn get-note [{:keys [noteID]}]
   (if (storage/note-exists? noteID)
     (let [note (storage/get-note noteID)]
diff --git a/src/notehub/handler.clj b/src/notehub/handler.clj
index 16af70e..f193409 100644
--- a/src/notehub/handler.clj
+++ b/src/notehub/handler.clj
@@ -90,27 +90,19 @@
   {:headers {"Content-Type" ctype}
    :body content})
 
-(defn version-manager [f params]
-  (generate-string
-   (if-let [version (:version params)]
-     (f (if (and (:noteID params) (< (Float/parseFloat version) 1.3))
-          (assoc params :noteID (sreplace (params :noteID) #" " "/"))
-          params))
-     (api/create-response false "API version expected"))))
-
 (defroutes api-routes
 
   (GET "/" [] (layout (get-message :api-title)
                       (md-node :article (slurp "API.md"))))
 
   (GET "/note" {params :params}
-       (version-manager api/get-note params))
+       (generate-string (api/version-manager api/get-note params)))
 
   (POST "/note" {params :params}
-        (version-manager api/post-note params))
+        (generate-string (api/version-manager api/post-note params)))
 
   (PUT "/note" {params :params}
-       (version-manager api/update-note params)))
+       (generate-string (api/version-manager api/update-note params))))
 
 (defroutes app-routes
   (context "/api" [] api-routes)
diff --git a/test/notehub/test/api.clj b/test/notehub/test/api.clj
index 2003769..1f6f4cd 100644
--- a/test/notehub/test/api.clj
+++ b/test/notehub/test/api.clj
@@ -19,8 +19,8 @@
 (defn send-request
   ([resource] (send-request resource {}))
   ([resource params]
-  (let [[method url] (if (vector? resource) resource [:get resource])]
-    (app-routes {:request-method method :uri url :params params}))))
+   (let [[method url] (if (vector? resource) resource [:get resource])]
+     (app-routes {:request-method method :uri url :params params}))))
 
 (defn has-status [input status]
   (= status (:status input)))
@@ -59,9 +59,9 @@
         (let [su (last (clojure.string/split (:shortURL get-response) #"/"))]
           (is (= su (storage/create-short-url (:noteID post-response) (storage/resolve-url su)))))
         (let [resp (send-request
-                                (clojure.string/replace (:shortURL get-response) domain ""))
+                    (clojure.string/replace (:shortURL get-response) domain ""))
               resp (send-request ((:headers resp) "Location"))]
-        (is (substring? "hello world"(:body resp))))
+          (is (substring? "hello world"(:body resp))))
         (is (= (:publisher get-response) pid))
         (is (= (:title get-response) (derive-title note)))
         (is (= "1" (get-in get-response [:statistics :views])))
@@ -95,13 +95,13 @@
           (is (= "signature invalid" (:message (:status update-response)))))
         (is (= note (:note (get-note {:noteID note-id}))))
         (let [update-response (update-note {:noteID note-id :note new-note :pid pid
-                                           :signature (storage/sign pid psk note-id new-note "passwd")
-                                                       :password "passwd"})]
+                                            :signature (storage/sign pid psk note-id new-note "passwd")
+                                            :password "passwd"})]
           (is (= { :success true } (:status update-response)))
           (isnt (= nil (get-in (get-note {:noteID note-id}) [:statistics :edited])))
           (is (= new-note (:note (get-note {:noteID note-id})))))
         (let [update-response (update-note {:noteID note-id :note "aaa" :pid pid
-                                           :signature (storage/sign pid psk note-id "aaa" "pass")
+                                            :signature (storage/sign pid psk note-id "aaa" "pass")
                                             :password "pass"})]
           (isnt (:success (:status update-response)))
           (is (= "password invalid" (:message (:status update-response)))))
@@ -121,6 +121,14 @@
       (is (get-in body ["status" "success"]))
       (is (= note ((parse-string
                     (:body (send-request [:get "/api/note"] {:version "1.0" :noteID noteID}))) "note")))
+      (is (= "API version expected" ((parse-string
+                                      (:body (send-request [:get "/api/note"] {:noteID noteID}))) "message")))
+      (is (= note ((parse-string
+                    (:body (send-request [:get "/api/note"] {:version "1.1"
+                                                             :noteID (clojure.string/replace noteID #"/" " ")}))) "note")))
+      (isnt (= note ((parse-string
+                    (:body (send-request [:get "/api/note"] {:version "1.3"
+                                                             :noteID (clojure.string/replace noteID #"/" " ")}))) "note")))
       (is (do
             (storage/delete-note noteID)
             (not (storage/note-exists? noteID)))))))