diff --git a/PHI-CL/data/b/main.lua b/PHI-CL/data/b/main.lua
index 704c10c..a524edf 100644
--- a/PHI-CL/data/b/main.lua
+++ b/PHI-CL/data/b/main.lua
@@ -54,6 +54,14 @@ end
 
 -- entity
 function main.EEE(source, tier)
+    if not data.raw[source.type] then
+        return
+    end
+
+    if not data.raw[source.type][source.ref_name] then
+        return
+    end
+
     local item = table.deepcopy(data.raw[source.type][source.ref_name])
     item.name = source.name .. '-' .. tier
     item.minable.result = item.name