diff --git a/core/java/src/net/i2p/data/Hash.java b/core/java/src/net/i2p/data/Hash.java
index a0f63459a3..add8235a6a 100644
--- a/core/java/src/net/i2p/data/Hash.java
+++ b/core/java/src/net/i2p/data/Hash.java
@@ -30,6 +30,7 @@ public class Hash extends SimpleDataStructure {
 
     /**
      * Pull from cache or return new
+     * @throws IllegalArgumentException if data is not the correct number of bytes
      * @since 0.8.3
      */
     public static Hash create(byte[] data) {
@@ -38,6 +39,7 @@ public class Hash extends SimpleDataStructure {
 
     /**
      * Pull from cache or return new
+     * @throws AIOOBE if not enough bytes
      * @since 0.8.3
      */
     public static Hash create(byte[] data, int off) {