diff --git a/changelog.txt b/changelog.txt
index 0c6e134..f6625e4 100644
--- a/changelog.txt
+++ b/changelog.txt
@@ -1,4 +1,9 @@
 ---------------------------------------------------------------------------------------------------
+Version: 0.0.12
+Date: 2022-02-12
+  Fixes:
+    - Refractory recipes: Productivity no longer applies to refractories
+---------------------------------------------------------------------------------------------------
 Version: 0.0.11
 Date: 2022-02-02
   Changes:
diff --git a/data-util.lua b/data-util.lua
index 38e91d0..84b7785 100644
--- a/data-util.lua
+++ b/data-util.lua
@@ -70,7 +70,7 @@ end
 function util.remove_prerequisite(technology_name, prerequisite)
   local technology = data.raw.technology[technology_name]
   local index = -1
-  if technology and data.raw.technology[prerequisite] then
+  if technology then
     for i, prereq in pairs(technology.prerequisites) do
       if prereq == prerequisite then
         index = i
@@ -558,7 +558,7 @@ function util.add_crafting_category(entity_type, entity, category)
    if data.raw[entity_type][entity] then
       for i, existing in pairs(data.raw[entity_type][entity].crafting_categories) do
         if existing == category then
-          log(entity.." not adding "..new.." -- duplicate")
+          log(entity.." not adding "..category.." -- duplicate")
           return
         end
       end
diff --git a/info.json b/info.json
index de1809a..28deff3 100644
--- a/info.json
+++ b/info.json
@@ -1,6 +1,6 @@
 {
     "name": "bzfoundry",
-    "version": "0.0.11",
+    "version": "0.0.12",
     "factorio_version": "1.1",
     "title": "Foundry",
     "author": "Brevven",
diff --git a/refractory-updates.lua b/refractory-updates.lua
index 4b7de4f..4adb043 100644
--- a/refractory-updates.lua
+++ b/refractory-updates.lua
@@ -192,7 +192,7 @@ function make_ingredients_and_products(r, name)
     end
   end
   for i, refractory in pairs(refractories) do
-    table.insert(r.results, {type="item", name=refractory, amount=max_count,
+    table.insert(r.results, {type="item", name=refractory, amount=max_count, catalyst_amount=max_count,
         probability=get_probability(#refractories)})
   end
 end