diff --git a/src/components/filesystem.js b/src/components/filesystem.js
index e022a1c6d0..3ab759b28a 100644
--- a/src/components/filesystem.js
+++ b/src/components/filesystem.js
@@ -6,11 +6,13 @@ define([], function () {
             if (window.NativeShell && window.NativeShell.FileSystem) {
                 return window.NativeShell.FileSystem.fileExists(path);
             }
+            return Promise.reject();
         },
         directoryExists: function (path) {
             if (window.NativeShell && window.NativeShell.FileSystem) {
                 return window.NativeShell.FileSystem.directoryExists(path);
             }
+            return Promise.reject();
         }
     };
 });
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