diff --git a/trinary/example.clj b/trinary/example.clj
deleted file mode 100644
index 3c7aec8e..00000000
--- a/trinary/example.clj
+++ /dev/null
@@ -1,15 +0,0 @@
-(ns trinary)
-
-(defn- num->digits [num]
-  (->> num
-       (map str)
-       (map read-string)))
-
-(defn to-decimal
-  [num]
-  (if (re-seq #"^[0-2]+$" num)
-    (->> num num->digits reverse
-         (map-indexed
-          (fn [place digit] (* digit (reduce * (repeat place 3)))))
-         (apply +))
-    0))
\ No newline at end of file
diff --git a/trinary/project.clj b/trinary/project.clj
index f479ffbc..bc273309 100644
--- a/trinary/project.clj
+++ b/trinary/project.clj
@@ -1,6 +1,4 @@
 (defproject trinary "0.1.0-SNAPSHOT"
   :description "trinary exercise."
   :url "https://github.com/exercism/xclojure/tree/master/trinary"
-  :source-paths [""]
-  :test-paths [""]
   :dependencies [[org.clojure/clojure "1.7.0"]])
diff --git a/trinary/src/example.clj b/trinary/src/example.clj
new file mode 100644
index 00000000..636068a3
--- /dev/null
+++ b/trinary/src/example.clj
@@ -0,0 +1,10 @@
+(ns trinary)
+
+(defn to-decimal [num]
+  (loop [sum 0, num num]
+    (if (empty? num)
+      sum
+      (let [diff (.compareTo (first num) \0)]
+        (if (<= 0 diff 2)
+          (recur (+ (* sum 3) diff) (next num))
+          0)))))
diff --git a/trinary/trinary_test.clj b/trinary/test/trinary_test.clj
similarity index 88%
rename from trinary/trinary_test.clj
rename to trinary/test/trinary_test.clj
index 7f3ef7bd..9822bb35 100644
--- a/trinary/trinary_test.clj
+++ b/trinary/test/trinary_test.clj
@@ -1,6 +1,6 @@
 (ns trinary-test
-  (:require [clojure.test :refer :all]
-            [trinary :refer :all]))
+  (:require [clojure.test :refer [deftest is testing]]
+            [trinary :refer [to-decimal]]))
 
 (deftest trinary-1-is-decimal-1
   (testing "1 should still be 1"
@@ -40,4 +40,4 @@
 
 (deftest invalid-input-with-digits-is-decimal-0
   (testing "0a1b2c should be 0"
-    (is (= 0 (to-decimal "0a1b2c")))))
\ No newline at end of file
+    (is (= 0 (to-decimal "0a1b2c")))))