diff --git a/project.clj b/project.clj
index 910cae2..1ad1d40 100644
--- a/project.clj
+++ b/project.clj
@@ -1,4 +1,4 @@
-(defproject clj-jwt "0.0.6"
+(defproject clj-jwt "0.0.7"
   :description  "Clojure library for JSON Web Token(JWT)"
   :url          "https://github.com/liquidz/clj-jwt"
   :license      {:name "Eclipse Public License"
diff --git a/src/clj_jwt/core.clj b/src/clj_jwt/core.clj
index 11233f9..64350f2 100644
--- a/src/clj_jwt/core.clj
+++ b/src/clj_jwt/core.clj
@@ -7,8 +7,11 @@
     [clojure.string    :as str]))
 
 (def ^:private DEFAULT_SIGNATURE_ALGORITHM :HS256)
-(def ^:private map->encoded-json (comp url-safe-encode-str json/write-str))
-(def ^:private encoded-json->map (comp #(json/read-str % :key-fn keyword) url-safe-decode-str))
+(def ^:private full-key-name #(subs (str %) 1))
+(def ^:private map->encoded-json (comp url-safe-encode-str
+                                       #(json/write-str % :key-fn full-key-name)))
+(def ^:private encoded-json->map (comp #(json/read-str % :key-fn keyword)
+                                       url-safe-decode-str))
 (defn- update-map [m k f] (if (contains? m k) (update-in m [k] f) m))
 
 (defrecord JWT [header claims signature])
diff --git a/test/clj_jwt/core_test.clj b/test/clj_jwt/core_test.clj
index 94ddeec..477bb8b 100644
--- a/test/clj_jwt/core_test.clj
+++ b/test/clj_jwt/core_test.clj
@@ -147,7 +147,13 @@
 
   (fact "ES512 signed JWT shoud be verified."
     (-> claim jwt (sign :ES512 ec-prv-key) (verify ec-pub-key))                 => true
-    (-> claim jwt (sign :ES512 ec-prv-key) to-str str->jwt (verify ec-pub-key)) => true))
+    (-> claim jwt (sign :ES512 ec-prv-key) to-str str->jwt (verify ec-pub-key)) => true)
+
+  (fact "Claims containing string key should be verified"
+    (let [sclaim {"a/b" "c"}]
+      (-> sclaim jwt (sign "foo") (verify "foo"))                 => true
+      (-> sclaim jwt (sign "foo") to-str str->jwt (verify "foo")) => true
+      (-> sclaim jwt (sign "foo") (verify "bar"))                 => false)))
 
 
 (facts "str->jwt function should work."