diff --git a/data/lua/location_set.lua b/data/lua/location_set.lua
index 6261cf88b1e..02c4a12f1d0 100644
--- a/data/lua/location_set.lua
+++ b/data/lua/location_set.lua
@@ -100,7 +100,7 @@ function methods:stable_iter(f)
 	table.sort(indices)
 	for i,p in ipairs(indices) do
 		local x, y = revindex(p)
-		f(x, y, v)
+		f(x, y)
 	end
 end