diff --git a/src/actions/DinerAction.lua b/src/actions/DinerAction.lua
index 6a9b0d0..449669b 100644
--- a/src/actions/DinerAction.lua
+++ b/src/actions/DinerAction.lua
@@ -96,7 +96,7 @@ function _M.levelUpRpc( agent, data )
 		return
 	end
 	if buildingData.upLimit ~= "" then
-		local id, level = buildingData.upLimit:math("(%d+)=(%d+)")
+		local id, level = buildingData.upLimit:match("(%d+)=(%d+)")
 		if buildL:getv(tonumber(id), 1) < tonumber(level) then
 			return
 		end
--
libgit2 0.21.2