diff --git a/src/scot/weft/i18n/core.clj b/src/scot/weft/i18n/core.clj
index 99fcc9b..31e6c09 100644
--- a/src/scot/weft/i18n/core.clj
+++ b/src/scot/weft/i18n/core.clj
@@ -136,7 +136,7 @@
 
   Returns a map of message keys to strings."
   {:doc/format :markdown}
-  [accept-language-header resource-path default-locale]
+  [^String accept-language-header ^String resource-path ^String default-locale]
   (let [file-path (first
                     (remove
                       nil?
diff --git a/test/scot/weft/i18n/test/core.clj b/test/scot/weft/i18n/test/core.clj
index 41f74f2..f1acff6 100644
--- a/test/scot/weft/i18n/test/core.clj
+++ b/test/scot/weft/i18n/test/core.clj
@@ -1,7 +1,7 @@
 (ns ^{:doc "Tests for Internationalisation."
       :author "Simon Brooke"} scot.weft.i18n.test.core
-  (:use clojure.test
-        scot.weft.i18n.core))
+  (:require [clojure.test :refer :all]
+            [scot.weft.i18n.core :refer :all]))
 
 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
 ;;;;