diff --git a/bzsilicon2/changelog.txt b/bzsilicon2/changelog.txt
index 0750430..8f50000 100644
--- a/bzsilicon2/changelog.txt
+++ b/bzsilicon2/changelog.txt
@@ -1,9 +1,4 @@
 ---------------------------------------------------------------------------------------------------
-Version: 2.0.22
-Date: 09.11.2025
-  Bug Fixes:
-    - Fix silicone not being unlocked with K2
----------------------------------------------------------------------------------------------------
 Version: 2.0.21
 Date: 07.11.2025
   Bug Fixes:
diff --git a/bzsilicon2/compatibility/krastorio2.lua b/bzsilicon2/compatibility/krastorio2.lua
index 06c89d6..6750161 100644
--- a/bzsilicon2/compatibility/krastorio2.lua
+++ b/bzsilicon2/compatibility/krastorio2.lua
@@ -1,5 +1,4 @@
 if mods["Krastorio2"] then
     local k2datautil = require("__Krastorio2__/data-util")
-  k2datautil.remove_recipe_unlock("kr-silicon-processing", "kr-quartz")
-  k2datautil.remove_recipe_unlock("kr-silicon-processing", "kr-filtration-plant")
+    k2datautil.remove_recipe_unlock("kr-silicon-processing", "kr-quartz")
 end
\ No newline at end of file
diff --git a/bzsilicon2/info.json b/bzsilicon2/info.json
index 1770d43..b87a8cf 100644
--- a/bzsilicon2/info.json
+++ b/bzsilicon2/info.json
@@ -1,6 +1,6 @@
 {
   "name": "bzsilicon2",
-  "version": "2.0.22",
+  "version": "2.0.21",
   "factorio_version": "2.0",
   "title": "Silica & Silicon - Legacy",
   "description": "Adds silica, silicon, and basic fiber optics to the game.",
diff --git a/bzsilicon2/prototypes/silica-recipe.lua b/bzsilicon2/prototypes/silica-recipe.lua
index e83b468..d62cc34 100644
--- a/bzsilicon2/prototypes/silica-recipe.lua
+++ b/bzsilicon2/prototypes/silica-recipe.lua
@@ -1,5 +1,5 @@
 -- Silica
-local util = require("data-util")
+local util = require("data-util");
 local item_sounds = require('__base__.prototypes.item_sounds')
 data:extend(
 {
@@ -77,10 +77,7 @@ data:extend(
         type = "unlock-recipe",
         recipe = "kr-quartz"
       },
-      {
-        type = "unlock-recipe",
-        recipe = "kr-filtration-plant"
-      },},
+    },
     prerequisites = {"kr-fluids-chemistry", "kr-stone-processing"},
     unit =
     {
diff --git a/bzsilicon2/recipe-updates.lua b/bzsilicon2/recipe-updates.lua
index 1bbd5d8..0988805 100644
--- a/bzsilicon2/recipe-updates.lua
+++ b/bzsilicon2/recipe-updates.lua
@@ -1,4 +1,4 @@
-local util = require("data-util")
+local util = require("data-util");
 
 local silicon = util.k2() and "kr-silicon" or "silicon"
 local si = util.me.more_intermediates() and "silicon-wafer" or silicon
@@ -72,12 +72,12 @@ end
 util.add_ingredient("solar-cell", "lead-plate", 1)
 
 if not util.k2() then
-  util.remove_ingredient("concrete", "stone-brick")
+  util.remove_ingredient("concrete", "stone-brick");
   if mods["Bio_Industries"] or mods["omnimatter"] then
-    util.add_ingredient("concrete", "stone-brick", 3)
-    util.add_ingredient("concrete", "silica", 10)
+    util.add_ingredient("concrete", "stone-brick", 3);
+    util.add_ingredient("concrete", "silica", 10);
   else 
-    util.add_ingredient("concrete", "silica", 25)
+    util.add_ingredient("concrete", "silica", 25);
   end
   util.add_prerequisite("concrete", "silica-processing")
 
@@ -138,9 +138,9 @@ if not util.k2() then
   util.add_prerequisite("solar-energy", "silicon-processing")
   util.add_prerequisite("modules", util.me.silicon_processing)
 else
-  util.add_ingredient("concrete", "silica", 15)
+  util.add_ingredient("concrete", "silica", 15);
   if not mods["aai-industry"] then
-    util.add_ingredient("concrete", "kr-sand", 10)
+    util.add_ingredient("concrete", "kr-sand", 10);
   end
 end
 
@@ -218,15 +218,10 @@ util.add_prerequisite("circuit-network", util.me.silicon_processing)
 if util.k2() then
   util.add_ingredient("kr-advanced-lab", "optical-fiber", 10)
   util.add_ingredient("kr-ai-core", "optical-fiber", 2)
-  
-  if util.me.more_intermediates() then
-    --remove silicone from engine unit, add to electric engine
-    util.remove_ingredient("engine-unit", "silicone")
-    util.remove_ingredient("engine-unit", "pipe")
-    util.add_ingredient("engine-unit", "pipe", 2)
-    util.add_ingredient("electric-engine-unit", "silicone", 1)
-    util.add_prerequisite(util.me.silicon_processing, "silica-processing")
 
+  util.add_prerequisite(util.me.silicon_processing, "silica-processing")
+
+  if util.me.more_intermediates() then 
     util.add_effect(util.me.silicon_processing, {type = "unlock-recipe", recipe="silicon-wafer"})
     util.remove_ingredient("kr-electronic-components", silicon)
     util.add_ingredient("kr-electronic-components", "silicon-wafer", 2)