diff --git a/src/core/atcore.cpp b/src/core/atcore.cpp
--- a/src/core/atcore.cpp
+++ b/src/core/atcore.cpp
@@ -304,7 +304,7 @@
     if (d->lastMessage.contains("T:") || d->lastMessage.contains("B:")) {
         temperature().decodeTemp(message);
     }
-    emit(receivedMessage(d->lastMessage));
+    emit receivedMessage(d->lastMessage);
 }
 
 void AtCore::setRelativePosition()
@@ -414,7 +414,7 @@
             d->sdCardPrinting = false;
             disconnect(d->tempTimer, &QTimer::timeout, this, &AtCore::sdCardPrintStatus);
         }
-        emit(stateChanged(d->printerState));
+        emit stateChanged(d->printerState);
     }
 }
 
@@ -713,7 +713,7 @@
 {
     if (mounted != isSdMounted()) {
         d->sdCardMounted = mounted;
-        emit(sdMountChanged(d->sdCardMounted));
+        emit sdMountChanged(d->sdCardMounted);
     }
 }
 
@@ -733,13 +733,13 @@
 void AtCore::appendSdCardFileList(const QString &fileName)
 {
     d->sdCardFileList.append(fileName);
-    emit(sdCardFileListChanged(d->sdCardFileList));
+    emit sdCardFileListChanged(d->sdCardFileList);
 }
 
 void AtCore::clearSdCardFileList()
 {
     d->sdCardFileList.clear();
-    emit(sdCardFileListChanged(d->sdCardFileList));
+    emit sdCardFileListChanged(d->sdCardFileList);
 }
 
 void AtCore::sdDelete(const QString &fileName)
diff --git a/src/core/printthread.cpp b/src/core/printthread.cpp
--- a/src/core/printthread.cpp
+++ b/src/core/printthread.cpp
@@ -122,13 +122,13 @@
 
 void PrintThread::endPrint()
 {
-    emit(printProgressChanged(100));
+    emit printProgressChanged(100);
     qCDebug(PRINT_THREAD) << "atEnd";
     disconnect(d->core->firmwarePlugin(), &IFirmware::readyForCommand, this, &PrintThread::processJob);
     disconnect(this, &PrintThread::nextCommand, d->core, &AtCore::pushCommand);
     disconnect(d->core, &AtCore::stateChanged, this, &PrintThread::setState);
-    emit(stateChanged(AtCore::FINISHEDPRINT));
-    emit(stateChanged(AtCore::IDLE));
+    emit stateChanged(AtCore::FINISHEDPRINT);
+    emit stateChanged(AtCore::IDLE);
     disconnect(this, &PrintThread::stateChanged, d->core, &AtCore::setState);
     emit finished();
 
@@ -140,7 +140,7 @@
     d->stillSize -= d->cline.size() + 1; //remove read chars
     d->printProgress = float(d->totalSize - d->stillSize) * 100.0 / float(d->totalSize);
     qCDebug(PRINT_THREAD) << "progress:" << QString::number(d->printProgress);
-    emit(printProgressChanged(d->printProgress));
+    emit printProgressChanged(d->printProgress);
 
     if (d->cline.startsWith(QStringLiteral(";-"))) {
         injectCommand(d->cline);
@@ -180,7 +180,7 @@
                               .arg(QVariant::fromValue(newState).value<QString>());
         disconnect(d->core, &AtCore::stateChanged, this, &PrintThread::setState);
         d->state = newState;
-        emit(stateChanged(d->state));
+        emit stateChanged(d->state);
         connect(d->core, &AtCore::stateChanged, this, &PrintThread::setState, Qt::QueuedConnection);
     }
 }
diff --git a/src/core/seriallayer.cpp b/src/core/seriallayer.cpp
--- a/src/core/seriallayer.cpp
+++ b/src/core/seriallayer.cpp
@@ -87,7 +87,7 @@
         // Get finished line to _byteCommands
         if (i < tempList.end() - 1) {
             d->_rByteCommands.append(*i);
-            emit(receivedCommand(*i));
+            emit receivedCommand(*i);
         } else {
             d->_rawData.clear();
             d->_rawData.append(*i);
@@ -103,7 +103,7 @@
     }
     QByteArray tmp = comm + term;
     write(tmp);
-    emit(pushedCommand(tmp));
+    emit pushedCommand(tmp);
 
 }
 
@@ -131,7 +131,7 @@
     }
     for (const auto &comm : d->_sByteCommands) {
         write(comm);
-        emit(pushedCommand(comm));
+        emit pushedCommand(comm);
     }
     d->_sByteCommands.clear();
 }