diff --git a/src/endWeek/economics/neighborsDevelopment.js b/src/endWeek/economics/neighborsDevelopment.js
index f73a615fdb475700f832a2a7fe7572b53dadc75a..899cb539ae480e300e8b6781dca74e6608ceee09 100644
--- a/src/endWeek/economics/neighborsDevelopment.js
+++ b/src/endWeek/economics/neighborsDevelopment.js
@@ -5,7 +5,7 @@ App.EndWeek.neighborsDevelopment = function() {
 	const el = document.createElement("p");
 	let He, his;
 
-	const averageProsperity = _.mean(V.arcologies.map(a => a.prosperity < 10 ? 10 : a.prosperity));
+	const averageProsperity = _.mean(V.arcologies.map(a => Math.min(a.prosperity, 10)));
 	const corpBonus = V.corp.Incorporated ? Math.trunc(1000 * Math.pow(App.Corporate.value, 0.1)) : 0;
 	let agentBonusValue = 0;
 	let desc;