diff --git a/aiAlu.circ b/aiAlu.circ
index f48dc12..bc8350c 100644
--- a/aiAlu.circ
+++ b/aiAlu.circ
@@ -3,11 +3,8 @@
 This file is intended to be loaded by Logisim (http://www.cburch.com/logisim/).
 <lib desc="#Wiring" name="0"/>
   <lib desc="#Gates" name="1"/>
-  <lib desc="#Plexers" name="2"/>
-  <lib desc="#Arithmetic" name="3"/>
-  <lib desc="#Memory" name="4"/>
-  <lib desc="#I/O" name="5"/>
-  <lib desc="#Base" name="6">
+  <lib desc="#I/O" name="2"/>
+  <lib desc="#Base" name="3">
     <tool name="Text Tool">
       <a name="text" val=""/>
       <a name="font" val="SansSerif plain 12"/>
@@ -22,14 +19,14 @@ This file is intended to be loaded by Logisim (http://www.cburch.com/logisim/).
     <a name="simrand" val="0"/>
   </options>
   <mappings>
-    <tool lib="6" map="Button2" name="Menu Tool"/>
-    <tool lib="6" map="Button3" name="Menu Tool"/>
-    <tool lib="6" map="Ctrl Button1" name="Menu Tool"/>
+    <tool lib="3" map="Button2" name="Menu Tool"/>
+    <tool lib="3" map="Button3" name="Menu Tool"/>
+    <tool lib="3" map="Ctrl Button1" name="Menu Tool"/>
   </mappings>
   <toolbar>
-    <tool lib="6" name="Poke Tool"/>
-    <tool lib="6" name="Edit Tool"/>
-    <tool lib="6" name="Text Tool">
+    <tool lib="3" name="Poke Tool"/>
+    <tool lib="3" name="Edit Tool"/>
+    <tool lib="3" name="Text Tool">
       <a name="text" val=""/>
       <a name="font" val="SansSerif plain 12"/>
       <a name="halign" val="center"/>