diff --git a/gui/yosystab.cc b/gui/yosystab.cc
index f2e99cbc..fba2362d 100644
--- a/gui/yosystab.cc
+++ b/gui/yosystab.cc
@@ -61,7 +61,11 @@ YosysTab::YosysTab(QString folder, QWidget *parent) : QWidget(parent)
     connect(process, SIGNAL(readyReadStandardError()), this, SLOT(onReadyReadStandardError()));
     connect(process, SIGNAL(readyReadStandardOutput()), this, SLOT(onReadyReadStandardOutput()));
     connect(process, &QProcess::started, this, [this] { lineEdit->setEnabled(true); });
+#if QT_VERSION < QT_VERSION_CHECK(5, 6, 0)
+    connect(process, &QProcess::error, this, [this](QProcess::ProcessError error) {
+#else
     connect(process, &QProcess::errorOccurred, this, [this](QProcess::ProcessError error) {
+#endif
         if (error == QProcess::FailedToStart) {
             QMessageBox::critical(
                     this, QString::fromUtf8("Yosys cannot be started!"),