diff --git a/src/main/java/de/neemann/digital/core/element/Key.java b/src/main/java/de/neemann/digital/core/element/Key.java
index 8dfdfd5f4..b8eade015 100644
--- a/src/main/java/de/neemann/digital/core/element/Key.java
+++ b/src/main/java/de/neemann/digital/core/element/Key.java
@@ -117,7 +117,7 @@ public class Key<VALUE> {
      * Stores additional combo box values
      */
     static final class KeyBits extends KeyInteger {
-        private static final Integer[] VALUES = new Integer[]{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16};
+        private static final Integer[] VALUES = new Integer[]{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 32};
 
         KeyBits(String key) {
             super(key, 1);