diff --git a/core/src/main/java/com/google/bitcoin/core/InventoryItem.java b/core/src/main/java/com/google/bitcoin/core/InventoryItem.java
index dc7aeadb6..e69d0f552 100644
--- a/core/src/main/java/com/google/bitcoin/core/InventoryItem.java
+++ b/core/src/main/java/com/google/bitcoin/core/InventoryItem.java
@@ -42,4 +42,14 @@ public class InventoryItem {
     public String toString() {
         return type.toString() + ": " + hash;
     }
+
+    public int hashCode() {
+        return hash.hashCode() + type.ordinal();
+    }
+
+    public boolean equals(Object o) {
+        return o instanceof InventoryItem &&
+                ((InventoryItem)o).type == this.type &&
+                ((InventoryItem)o).hash.equals(this.hash);
+    }
 }