diff --git a/src/widgets/ratescontrolwidget.cpp b/src/widgets/ratescontrolwidget.cpp
index 48a83d6..976f6af 100644
--- a/src/widgets/ratescontrolwidget.cpp
+++ b/src/widgets/ratescontrolwidget.cpp
@@ -1,41 +1,41 @@
 /* Atelier KDE Printer Host for 3D Printing
     Copyright (C) <2017>
     Author: Lays Rodrigues - laysrodriguessilva@gmail.com
 
     This program is free software: you can redistribute it and/or modify
     it under the terms of the GNU General Public License as published by
     the Free Software Foundation, either version 3 of the License, or
     (at your option) any later version.
 
     This program is distributed in the hope that it will be useful,
     but WITHOUT ANY WARRANTY; without even the implied warranty of
     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
     along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 #include "ratescontrolwidget.h"
 #include "ui_ratescontrolwidget.h"
 
 RatesControlWidget::RatesControlWidget(QWidget *parent) :
     QWidget(parent),
     ui(new Ui::RatesControlWidget)
 {
     ui->setupUi(this);
-    connect(ui->flowRateSB, static_cast<void (QDoubleSpinBox::*)(double)>(&QDoubleSpinBox::valueChanged), [ = ](float value){
+    connect(ui->flowRateSB, static_cast<void (QDoubleSpinBox::*)(double)>(&QDoubleSpinBox::valueChanged), [ this ](float value){
         emit flowRateChanged(value);
     });
-    connect(ui->fanSpeedSB, static_cast<void (QDoubleSpinBox::*)(double)>(&QDoubleSpinBox::valueChanged), [ = ](float value){
+    connect(ui->fanSpeedSB, static_cast<void (QDoubleSpinBox::*)(double)>(&QDoubleSpinBox::valueChanged), [ this ](float value){
         emit fanSpeedChanged(value);
     });
-    connect(ui->printSpeedSB, static_cast<void (QDoubleSpinBox::*)(double)>(&QDoubleSpinBox::valueChanged), [ = ](float value){
+    connect(ui->printSpeedSB, static_cast<void (QDoubleSpinBox::*)(double)>(&QDoubleSpinBox::valueChanged), [ this ](float value){
        emit printSpeedChanged(value);
     });
 
 }
 
 RatesControlWidget::~RatesControlWidget()
 {
     delete ui;
 }