diff --git a/android/assets/jsons/Buildings.json b/android/assets/jsons/Buildings.json
index 3103225c..3af4e89b 100644
--- a/android/assets/jsons/Buildings.json
+++ b/android/assets/jsons/Buildings.json
@@ -98,7 +98,7 @@
 		greatPersonPoints:{production:1},
 		isWonder:true,
 		uniques:["Worker construction increased 25%","Provides 2 free workers"],
-		requiredTech:"Mathematics"
+		requiredTech:"Masonry"
 	},
 	{
 		name:"Barracks",