diff --git a/day11/parallel_rewrite.js b/day11/parallel_rewrite.js
index e7155cc..ec1fffc 100644
--- a/day11/parallel_rewrite.js
+++ b/day11/parallel_rewrite.js
@@ -110,7 +110,6 @@ function nextSetOfScenarios(scenarios, callback){
 
   console.log("start", scenarios.length);
   p.map(scenarios, possibleScenarios, (err, scenarios)=>{
-    scenarios = scenarios.reduce((a, b)=>(a.concat(b)), []);
     var allscenarios = [];
     for(var scenarioSet of scenarios){
       for(var scenario of scenarioSet){