diff --git a/PHI-CL/data.lua b/PHI-CL/data.lua
index 9095c1c..096c534 100644
--- a/PHI-CL/data.lua
+++ b/PHI-CL/data.lua
@@ -568,7 +568,7 @@ if mods['space-age'] and (settings.startup['PHI-GM'].value and settings.startup[
         end
     end
 
-    data.raw.item['artillery-shell'].stack_size = data.raw['inserter']['stack-inserter'].max_belt_stack_size
+    data.raw.ammo['artillery-shell'].stack_size = data.raw['inserter']['stack-inserter'].max_belt_stack_size
 
     for _, v in pairs(data.raw.tile) do
         if v.fluid then