diff --git a/src/qt/coincontroldialog.cpp b/src/qt/coincontroldialog.cpp
index 770aa4a837..f21483759f 100644
--- a/src/qt/coincontroldialog.cpp
+++ b/src/qt/coincontroldialog.cpp
@@ -121,6 +121,9 @@ CoinControlDialog::CoinControlDialog(QWidget *parent) :
     // (un)select all
     connect(ui->pushButtonSelectAll, SIGNAL(clicked()), this, SLOT(buttonSelectAllClicked()));
 
+    // Toggle lock state
+    connect(ui->pushButtonToggleLock, SIGNAL(clicked()), this, SLOT(buttonToggleLockClicked()));
+
     // change coin control first column label due Qt4 bug. 
     // see https://github.com/bitcoin/bitcoin/issues/5716
     ui->treeWidget->headerItem()->setText(COLUMN_CHECKBOX, QString());
@@ -210,6 +213,40 @@ void CoinControlDialog::buttonSelectAllClicked()
     CoinControlDialog::updateLabels(model, this);
 }
 
+// Toggle lock state
+void CoinControlDialog::buttonToggleLockClicked()
+{
+    QTreeWidgetItem *item;
+    // Works in list-mode only
+    if(ui->radioListMode->isChecked()){
+        ui->treeWidget->setEnabled(false);
+        for (int i = 0; i < ui->treeWidget->topLevelItemCount(); i++){
+            item = ui->treeWidget->topLevelItem(i);
+            COutPoint outpt(uint256(item->text(COLUMN_TXHASH).toStdString()), item->text(COLUMN_VOUT_INDEX).toUInt());
+            if (model->isLockedCoin(uint256(item->text(COLUMN_TXHASH).toStdString()), item->text(COLUMN_VOUT_INDEX).toUInt())){
+                model->unlockCoin(outpt);
+                item->setDisabled(false);
+                item->setIcon(COLUMN_CHECKBOX, QIcon());
+            }
+            else{
+                model->lockCoin(outpt);
+                item->setDisabled(true);
+                item->setIcon(COLUMN_CHECKBOX, QIcon(":/icons/lock_closed"));
+            }
+            updateLabelLocked();
+        }
+        ui->treeWidget->setEnabled(true);
+        CoinControlDialog::updateLabels(model, this);
+    }
+    else{
+        QMessageBox msgBox;
+        msgBox.setObjectName("lockMessageBox");
+        msgBox.setStyleSheet(GUIUtil::loadStyleSheet());
+        msgBox.setText(tr("Please switch to \"List mode\" to use this function."));
+        msgBox.exec();
+    }
+}
+
 // context menu
 void CoinControlDialog::showMenu(const QPoint &point)
 {
diff --git a/src/qt/coincontroldialog.h b/src/qt/coincontroldialog.h
index 5a6ae0cdf0..25c088762b 100644
--- a/src/qt/coincontroldialog.h
+++ b/src/qt/coincontroldialog.h
@@ -122,6 +122,7 @@ private slots:
     void headerSectionClicked(int);
     void buttonBoxClicked(QAbstractButton*);
     void buttonSelectAllClicked();
+    void buttonToggleLockClicked();
     void updateLabelLocked();
 };
 
diff --git a/src/qt/forms/coincontroldialog.ui b/src/qt/forms/coincontroldialog.ui
index c78a2d20a3..a80652c3c3 100644
--- a/src/qt/forms/coincontroldialog.ui
+++ b/src/qt/forms/coincontroldialog.ui
@@ -348,7 +348,7 @@
      </property>
      <layout class="QHBoxLayout" name="horizontalLayout">
       <item>
-       <layout class="QHBoxLayout" name="horizontalLayoutPanel" stretch="0,0,0,0,0">
+       <layout class="QHBoxLayout" name="horizontalLayoutPanel" stretch="0,0,0,0,0,0">
         <property name="spacing">
          <number>14</number>
         </property>
@@ -368,6 +368,22 @@
           </property>
          </widget>
         </item>
+        <item>
+         <widget class="QPushButton" name="pushButtonToggleLock">
+          <property name="sizePolicy">
+           <sizepolicy hsizetype="Maximum" vsizetype="Fixed">
+            <horstretch>0</horstretch>
+            <verstretch>0</verstretch>
+           </sizepolicy>
+          </property>
+          <property name="text">
+           <string>toggle lock state</string>
+          </property>
+          <property name="autoDefault">
+           <bool>false</bool>
+          </property>
+         </widget>
+        </item>
         <item>
          <widget class="QRadioButton" name="radioTreeMode">
           <property name="sizePolicy">
diff --git a/src/qt/res/css/drkblue.css b/src/qt/res/css/drkblue.css
index b711e1635c..965ef42a39 100644
--- a/src/qt/res/css/drkblue.css
+++ b/src/qt/res/css/drkblue.css
@@ -1328,6 +1328,12 @@ padding-right:10px;
 min-height:25px;
 }
 
+QDialog#CoinControlDialog .QFrame#frame .QPushButton#pushButtonToggleLock { /* Toggle lock state button */
+padding-left:10px;
+padding-right:10px;
+min-height:25px;
+}
+
 QDialog#CoinControlDialog .QDialogButtonBox#buttonBox QPushButton { /* Coin Control 'OK' button */
 }