diff --git a/app/lib/surface/CocoSprite.coffee b/app/lib/surface/CocoSprite.coffee
index 3daaa5635..98187cb7b 100644
--- a/app/lib/surface/CocoSprite.coffee
+++ b/app/lib/surface/CocoSprite.coffee
@@ -73,7 +73,7 @@ module.exports = CocoSprite = class CocoSprite extends CocoClass
   toString: -> "<CocoSprite: #{@thang?.id}>"
 
   buildSpriteSheet: ->
-    options = @thang?.getSpriteOptions() or {}
+    options = @thang?.getSpriteOptions?() or {}
     options.colorConfig = @options.colorConfig if @options.colorConfig
     options.async = false
     @thangType.getSpriteSheet options