diff --git a/testing/mochitest/server.js b/testing/mochitest/server.js
index f8f079595ea6..2965f0e8d38e 100644
--- a/testing/mochitest/server.js
+++ b/testing/mochitest/server.js
@@ -244,7 +244,9 @@ function list(requestPath, directory, recurse)
       [links[key], childCount] = list(key, file, recurse);
       count += childCount;
     } else {
-      links[key] = true;
+      if (file.leafName.charAt(0) != '.') {
+        links[key] = true;
+      }
     }
   }