diff --git a/src/util/externalcommandhelper.cpp b/src/util/externalcommandhelper.cpp
--- a/src/util/externalcommandhelper.cpp
+++ b/src/util/externalcommandhelper.cpp
@@ -90,7 +90,7 @@
 */
 quint64 ExternalCommandHelper::getNonce()
 {
-    quint64 nonce = m_Generator.generate();
+    const quint64 nonce = m_Generator.generate();
     m_Nonces.insert(nonce);
     return nonce;
 }
@@ -135,6 +135,7 @@
 bool ExternalCommandHelper::writeData(const QString &targetDevice, const QByteArray& buffer, qint64 offset)
 {
     QFile device(targetDevice);
+
     if (!device.open(QIODevice::WriteOnly | QIODevice::Append | QIODevice::Unbuffered)) {
         qCritical() << xi18n("Could not open device <filename>%1</filename> for writing.", targetDevice);
         return false;
@@ -149,6 +150,7 @@
         qCritical() << xi18n("Could not write to device <filename>%1</filename>.", targetDevice);
         return false;
     }
+
     return true;
 }