diff --git a/src/main/java/io/ipfs/multihash/Multihash.java b/src/main/java/io/ipfs/multihash/Multihash.java
index 2fb6776..3717f74 100644
--- a/src/main/java/io/ipfs/multihash/Multihash.java
+++ b/src/main/java/io/ipfs/multihash/Multihash.java
@@ -148,6 +148,10 @@ public static Type lookup(int t) {
             return type;
         }
 
+        @Override
+        public int hashCode() {
+            return index;
+        }
     }
 
     private final Type type;