diff --git a/src/darksend.cpp b/src/darksend.cpp
index 86b68b4c54..fbe11a0264 100644
--- a/src/darksend.cpp
+++ b/src/darksend.cpp
@@ -1364,7 +1364,7 @@ bool CDarkSendPool::DoAutomaticDenominating(bool fDryRun, bool ready)
 
     int64 balanceNeedsAnonymized = pwalletMain->GetBalance() - pwalletMain->GetAnonymizedBalance();
     if(balanceNeedsAnonymized > maxAmount*COIN) balanceNeedsAnonymized= maxAmount*COIN;
-    if(balanceNeedsAnonymized < COIN*1.1){
+    if(balanceNeedsAnonymized < COIN*2.5){
         LogPrintf("DoAutomaticDenominating : No funds detected in need of denominating \n");
         return false;
     }
diff --git a/src/qt/overviewpage.cpp b/src/qt/overviewpage.cpp
index 856c7d6cc7..d8407560ce 100644
--- a/src/qt/overviewpage.cpp
+++ b/src/qt/overviewpage.cpp
@@ -385,6 +385,15 @@ void OverviewPage::runDoAutomaticDenomination(){
 }
 
 void OverviewPage::toggleDarksend(){
+    int64 balance = pwalletMain->GetBalance();
+    if(balance < 2.5*coin){
+        QMessageBox::warning(this, tr("Darksend"),
+            tr("Darksend requires at least 2.5 DRK to use."),
+            QMessageBox::Ok, QMessageBox::O
+        return;
+    }
+
+
     darkSendPool.cachedNumBlocks = 0;
 
     fEnableDarksend = !fEnableDarksend;
diff --git a/src/wallet.cpp b/src/wallet.cpp
index 75794cff09..844c4f5faf 100644
--- a/src/wallet.cpp
+++ b/src/wallet.cpp
@@ -1784,9 +1784,6 @@ bool CWallet::CreateCollateralTransaction(CTransaction& txCollateral, std::strin
 
     if (!SelectCoinsCollateral(vCoinsCollateral, nValueIn2))
     {
-        BOOST_FOREACH(CTxIn v, vCoinsCollateral)
-            UnlockCoin(v.prevout);
-
         strReason = "Error: Darksend requires a collateral transaction and could not locate an acceptable input!";
         return false;
     }
@@ -1819,9 +1816,6 @@ bool CWallet::CreateCollateralTransaction(CTransaction& txCollateral, std::strin
         vinNumber++;
     }
 
-    BOOST_FOREACH(CTxIn v, vCoinsCollateral)
-        LockCoin(v.prevout);
-
     return true;
 }