1 files changed, 12 insertions, 13 deletions
diff --git a/lib/parse/listAssets.js b/lib/parse/listAssets.js
index b2e141c..d83d8fd 100644
--- a/lib/parse/listAssets.js
+++ b/lib/parse/listAssets.js
@@ -23,21 +23,20 @@ function listAssets(book, pages) {
     var config = book.getConfig();
     var configFile = config.getFile().getPath();
 
+    function filterFile(file) {
+        return !(
+            file === summaryFile ||
+            file === glossaryFile ||
+            file === langsFile ||
+            file === configFile ||
+            book.isContentFileIgnored(file) ||
+            pages.has(file)
+        );
+    }
+
     return timing.measure(
         'parse.listAssets',
-        fs.listAllFiles()
-        .then(function(files) {
-            return files.filterNot(function(file) {
-                return (
-                    file === summaryFile ||
-                    file === glossaryFile ||
-                    file === langsFile ||
-                    file === configFile ||
-                    book.isContentFileIgnored(file) ||
-                    pages.has(file)
-                );
-            });
-        })
+        fs.listAllFiles('.', filterFile)
     );
 }