diff --git a/src/adv/AdvBattle.lua b/src/adv/AdvBattle.lua
index f463adb..7fe5141 100644
--- a/src/adv/AdvBattle.lua
+++ b/src/adv/AdvBattle.lua
@@ -322,6 +322,14 @@ function Battle:saveDB()
 			end
 		end
 	end
+	for idx, mapBuilds in pairs(self.builds) do
+		for _, build in ipairs(mapBuilds) do
+			local block = self.adv:getBlock(build.roomId, build.blockId, idx)
+			if block and block:isBuild() then
+				block.event.build = build:getDB()
+			end
+		end
+	end
 end
 
 return Battle
\ No newline at end of file
--
libgit2 0.21.2