diff --git a/prototypes/oil-updates.lua b/prototypes/oil-updates.lua
index 63f4fa7..6eec275 100644
--- a/prototypes/oil-updates.lua
+++ b/prototypes/oil-updates.lua
@@ -14,36 +14,38 @@ local recipes_to_update = {
 
 local prefix = "catalyzed-"
 for i, recipe_name in pairs(recipes_to_update) do
-  -- create a copy of the recipe
-  local r = futil.table.deepcopy(data.raw.recipe[recipe_name])
-  new_name = prefix..r.name
-  r.name = new_name
+  if data.raw.recipe[recipe_name] then
+    -- create a copy of the recipe
+    local r = futil.table.deepcopy(data.raw.recipe[recipe_name])
+    new_name = prefix..r.name
+    r.name = new_name
 
-  if string.find(new_name, "cracking") then
-    r.localised_name = {"", {"recipe-name.catalyzed"}, " ", {"recipe-name."..recipe_name}}
-  else
-    local s
-    s, _ = string.find(recipe_name, "-from-") -- bit of a hack
-    r.main_product = string.sub(recipe_name, 1, s-1)
-  end
+    if string.find(new_name, "cracking") then
+      r.localised_name = {"", {"recipe-name.catalyzed"}, " ", {"recipe-name."..recipe_name}}
+    else
+      local s
+      s, _ = string.find(recipe_name, "-from-") -- bit of a hack
+      r.main_product = string.sub(recipe_name, 1, s-1)
+    end
 
-  -- copy should require 1 catalyst, and have 90% chance to return 1 catalyst
-  data:extend({r})
-  util.add_ingredient(new_name, "ptpd-catalyst", 1, {force=true})
-  util.add_product(new_name, {type="item", name="ptpd-catalyst", amount=1,
-                          catalyst_amount=1, probability=.9}, {force=true})
-  util.add_icon(new_name, {icon="__bzgold__/graphics/icons/ptpd-catalyst.png",
-                       icon_size=128, scale=0.124, shift={8,-8}})
+    -- copy should require 1 catalyst, and have 90% chance to return 1 catalyst
+    data:extend({r})
+    util.add_ingredient(new_name, "ptpd-catalyst", 1, {force=true})
+    util.add_product(new_name, {type="item", name="ptpd-catalyst", amount=1,
+                                catalyst_amount=1, probability=.9}, {force=true})
+    util.add_icon(new_name, {icon="__bzgold__/graphics/icons/ptpd-catalyst.png",
+                             icon_size=128, scale=0.124, shift={8,-8}})
 
-  -- halve the time of the copy recipe
-  util.multiply_time(new_name, 0.5, {force=true})
+    -- halve the time of the copy recipe
+    util.multiply_time(new_name, 0.5, {force=true})
 
-  -- copy should be unlocked by "catalysis"
-  util.add_unlock("catalysis", new_name)
-  
-  -- add 10 to the input oil ingredients of the basic recipe
-  for j, fluid in pairs({"heavy-oil", "light-oil", "petroleum-gas"}) do
-    util.add_to_ingredient(recipe_name, fluid, 10)
+    -- copy should be unlocked by "catalysis"
+    util.add_unlock("catalysis", new_name)
+
+    -- add 10 to the input oil ingredients of the basic recipe
+    for j, fluid in pairs({"heavy-oil", "light-oil", "petroleum-gas"}) do
+      util.add_to_ingredient(recipe_name, fluid, 10)
+    end
   end
 end
 end