diff --git a/lib/transactions.js b/lib/transactions.js
index dc4402c..76cc1e8 100644
--- a/lib/transactions.js
+++ b/lib/transactions.js
@@ -165,7 +165,15 @@ var generateOutputTransactions = function(poolRecipient, recipients, rpcData){
         util.varIntBuffer(poolRecipient.length),
         poolRecipient
     ]));
-
+    
+    if (rpcData.default_witness_commitment !== undefined){
+        witness_commitment = new Buffer(rpcData.default_witness_commitment, 'hex');
+        txOutputBuffers.unshift(Buffer.concat([
+            util.packInt64LE(0),
+            util.varIntBuffer(witness_commitment.length),
+            witness_commitment
+        ]));
+    }
 
     return Buffer.concat([
         util.varIntBuffer(txOutputBuffers.length),