diff --git a/src/actions/ActivityAction.lua b/src/actions/ActivityAction.lua
index 7348a4e..0fd631e 100644
--- a/src/actions/ActivityAction.lua
+++ b/src/actions/ActivityAction.lua
@@ -1304,7 +1304,7 @@ function _M.newSignRpc(agent, data)
 	if not open then return 1 end
 
 	local actData = role.activity:getActData("NewSign")
-	if actData[actData["0"] or 0] then
+	if actData[tostring(actData["0"] or 0)] then
 		return 2
 	end
 
--
libgit2 0.21.2