diff --git a/lib/src/main/java/org/automerge/ObjectId.java b/lib/src/main/java/org/automerge/ObjectId.java
index 65c450a..a7df8c9 100644
--- a/lib/src/main/java/org/automerge/ObjectId.java
+++ b/lib/src/main/java/org/automerge/ObjectId.java
@@ -6,7 +6,7 @@
  * <p>
  * Composite objects are objects that contain other objects, such as lists and
  * maps. The ID of the object is used to read and write to the object. The root
- * object in automerge is a map, the ID of whic his {@link ObjectId#ROOT}.
+ * object in automerge is a map, the ID of which is {@link ObjectId#ROOT}.
  */
 public class ObjectId {
 	private byte[] raw;