diff --git a/distribution.coffee b/distribution.coffee
index 309ce74..5b0dd0d 100644
--- a/distribution.coffee
+++ b/distribution.coffee
@@ -65,8 +65,9 @@ for language in languages
     key = key.replace(filedir, '')
     spec[key] = data
 
-for group in spec.game.groups
-  parseGroup(group)
+if spec.game?
+  for group in spec.game.groups
+    parseGroup(group)
 
 for filename, value of distribution
   distribution[filename] = Math.round(value * 1000) / 1000