diff --git a/history/history-tests.ts b/history/history-tests.ts
index 57ab83f68..5b46307ed 100644
--- a/history/history-tests.ts
+++ b/history/history-tests.ts
@@ -1,17 +1,19 @@
 /// <reference path="history.d.ts" />
 
-if (!History.enabled) {
-    return false;
-}
+function tests() {
+    if (!Historyjs.enabled) {
+        return false;
+    }
 
-History.Adapter.bind(window, 'statechange', () => {
-    var State = History.getState();
-    History.log(State.data, State.title, State.url);
-});
+    Historyjs.Adapter.bind(window, 'statechange', () => {
+        var State = Historyjs.getState();
+        Historyjs.log(State.data, State.title, State.url);
+    });
 
-History.pushState({ state: 1 }, "State 1", "?state=1");
-History.pushState({ state: 2 }, "State 2", "?state=2");
-History.replaceState({ state: 3 }, "State 3", "?state=3");
-History.pushState(null, null, "?state=4");
-History.back();
-History.go(2);
\ No newline at end of file
+    Historyjs.pushState({ state: 1 }, "State 1", "?state=1");
+    Historyjs.pushState({ state: 2 }, "State 2", "?state=2");
+    Historyjs.replaceState({ state: 3 }, "State 3", "?state=3");
+    Historyjs.pushState(null, null, "?state=4");
+    Historyjs.back();
+    Historyjs.go(2);
+}
\ No newline at end of file
diff --git a/history/history.d.ts b/history/history.d.ts
index 00e4365d9..ecc260a79 100644
--- a/history/history.d.ts
+++ b/history/history.d.ts
@@ -10,7 +10,7 @@ interface HistoryAdapter {
     onDomLoad(callback);
 }
 
-interface History {
+interface Historyjs {
     enabled: bool;
     pushState(data, title, url);
     replaceState(data, title, url);
@@ -22,4 +22,6 @@ interface History {
     go(X);
     log(...messages: any[]);
     debug(...messages: any[]);
-}
\ No newline at end of file
+}
+
+declare var Historyjs: Historyjs;
\ No newline at end of file