diff --git a/src/DebugBar/JavascriptRenderer.php b/src/DebugBar/JavascriptRenderer.php
index 3450394..1dc7b3f 100644
--- a/src/DebugBar/JavascriptRenderer.php
+++ b/src/DebugBar/JavascriptRenderer.php
@@ -595,7 +595,7 @@ class JavascriptRenderer
             return $uris;
         }
 
-        if (substr($uri, 0, 1) === '/' || preg_match('/^([a-z]+:\/\/|[a-zA-Z]:\/)/', $uri)) {
+        if (substr($uri, 0, 1) === '/' || preg_match('/^([a-zA-Z]+:\/\/|[a-zA-Z]:\/|[a-zA-Z]:\\\)/', $uri)) {
             return $uri;
         }
         return rtrim($root, '/') . "/$uri";