diff --git a/src/instantx.cpp b/src/instantx.cpp
index d4e1058973..4d5e538eb4 100644
--- a/src/instantx.cpp
+++ b/src/instantx.cpp
@@ -232,7 +232,7 @@ int64_t CreateNewLock(CTransaction tx)
 
         CTransactionLock newLock;
         newLock.nBlockHeight = nBlockHeight;
-        newLock.nExpiration = GetTime()+(60*15); //locks expire after 15 minutes (6 confirmations)
+        newLock.nExpiration = GetTime()+(60*60); //locks expire after 15 minutes (6 confirmations)
         newLock.nTimeout = GetTime()+(60*5);
         newLock.txHash = tx.GetHash();
         mapTxLocks.insert(make_pair(tx.GetHash(), newLock));