diff --git a/src/core/scene/sortFunctions.js b/src/core/scene/sortFunctions.js
index d7f28369faf..8bf33681804 100644
--- a/src/core/scene/sortFunctions.js
+++ b/src/core/scene/sortFunctions.js
@@ -50,7 +50,7 @@ function aframeSortTransparentSpatial (a, b) {
 }
 
 module.exports = {
-  aframeSortOpaqueDefault,
-  aframeSortTransparentDefault,
-  aframeSortTransparentSpatial
+  aframeSortOpaqueDefault: aframeSortOpaqueDefault,
+  aframeSortTransparentDefault: aframeSortTransparentDefault,
+  aframeSortTransparentSpatial: aframeSortTransparentSpatial
 };