diff --git a/src/librustdoc/html/static/main.js b/src/librustdoc/html/static/main.js
index 82604cc7ad8b..60ee5c6f24b9 100644
--- a/src/librustdoc/html/static/main.js
+++ b/src/librustdoc/html/static/main.js
@@ -150,8 +150,7 @@ if (!DOMTokenList.prototype.remove) {
     }
 
     function browserSupportsHistoryApi() {
-        return document.location.protocol != "file:" &&
-          window.history && typeof window.history.pushState === "function";
+        return window.history && typeof window.history.pushState === "function";
     }
 
     var main = document.getElementById("main");