diff --git a/src/main/java/de/neemann/digital/core/basic/XNOr.java b/src/main/java/de/neemann/digital/core/basic/XNOr.java
index 664915ec9..a4b2e684f 100644
--- a/src/main/java/de/neemann/digital/core/basic/XNOr.java
+++ b/src/main/java/de/neemann/digital/core/basic/XNOr.java
@@ -10,7 +10,10 @@ import de.neemann.digital.core.element.ElementTypeDescription;
  */
 public class XNOr extends XOr {
 
-    public static final ElementTypeDescription DESCRIPTION = new ElementTypeDescription(XNOr.class, "a", "b").addAttribute(AttributeKey.Bits);
+    public static final ElementTypeDescription DESCRIPTION
+            = new ElementTypeDescription(XNOr.class, "a", "b")
+            .addAttribute(AttributeKey.Rotate)
+            .addAttribute(AttributeKey.Bits);
 
     public XNOr(ElementAttributes attributes) {
         super(attributes);
diff --git a/src/main/java/de/neemann/digital/core/basic/XOr.java b/src/main/java/de/neemann/digital/core/basic/XOr.java
index 151a597ff..d862fd7c5 100644
--- a/src/main/java/de/neemann/digital/core/basic/XOr.java
+++ b/src/main/java/de/neemann/digital/core/basic/XOr.java
@@ -14,7 +14,11 @@ import de.neemann.digital.core.element.ElementTypeDescription;
  */
 public class XOr extends Node implements Element {
 
-    public static final ElementTypeDescription DESCRIPTION = new ElementTypeDescription(XOr.class, "a", "b").addAttribute(AttributeKey.Bits);
+    public static final ElementTypeDescription DESCRIPTION
+            = new ElementTypeDescription(XOr.class, "a", "b")
+            .addAttribute(AttributeKey.Rotate)
+            .addAttribute(AttributeKey.Bits);
+
     private final int bits;
     private final ObservableValue out;
     protected ObservableValue a;