diff --git a/compiler/src/test/java/org/capnproto/EncodingTest.java b/compiler/src/test/java/org/capnproto/EncodingTest.java
index fde64a1..1f10853 100644
--- a/compiler/src/test/java/org/capnproto/EncodingTest.java
+++ b/compiler/src/test/java/org/capnproto/EncodingTest.java
@@ -844,6 +844,17 @@ public class EncodingTest {
       Assert.assertEquals(listReader.get(0).getInt8Field(), 11);
       TestUtil.checkTestMessage(listReader.get(1));
   }
+
+  @org.junit.Test
+  public void testCopyAnyPointer() {
+      MessageBuilder message1 = new MessageBuilder();
+      Test.TestAllTypes.Builder root1 = message1.initRoot(Test.TestAllTypes.factory);
+      TestUtil.initTestMessage(root1);
+
+      MessageBuilder message2 = new MessageBuilder();
+      AnyPointer.Builder root2 = message2.initRoot(AnyPointer.factory);
+      root2.setAs(AnyPointer.factory, message1.getRoot(AnyPointer.factory).asReader());
+
+      TestUtil.checkTestMessage(root2.getAs(Test.TestAllTypes.factory));
+  }
 }
-
-
diff --git a/runtime/src/main/java/org/capnproto/AnyPointer.java b/runtime/src/main/java/org/capnproto/AnyPointer.java
index 7123080..12c0e6c 100644
--- a/runtime/src/main/java/org/capnproto/AnyPointer.java
+++ b/runtime/src/main/java/org/capnproto/AnyPointer.java
@@ -22,7 +22,10 @@
 package org.capnproto;
 
 public final class AnyPointer {
-    public static final class Factory implements PointerFactory<Builder, Reader> {
+    public static final class Factory
+            implements PointerFactory<Builder, Reader>,
+                       SetPointerBuilder<Builder, Reader>
+    {
         public final Reader fromPointerReader(SegmentReader segment, int pointer, int nestingLimit) {
             return new Reader(segment, pointer, nestingLimit);
         }
@@ -34,6 +37,15 @@ public final class AnyPointer {
             result.clear();
             return result;
         }
+        public void setPointerBuilder(SegmentBuilder segment, int pointer, Reader value) {
+            if (value.isNull()) {
+                WireHelpers.zeroObject(segment, pointer);
+                WireHelpers.zeroPointerAndFars(segment, pointer);
+            }
+            else {
+                WireHelpers.copyPointer(segment, pointer, value.segment, value.pointer, value.nestingLimit);
+            }
+        }
     }
     public static final Factory factory = new Factory();