diff --git a/src/plugins/projectexplorer/runcontrol.cpp b/src/plugins/projectexplorer/runcontrol.cpp
index b826b215698..f8da814b7a6 100644
--- a/src/plugins/projectexplorer/runcontrol.cpp
+++ b/src/plugins/projectexplorer/runcontrol.cpp
@@ -1379,7 +1379,7 @@ void SimpleTargetRunnerPrivate::handleStandardOutput()
     const QByteArray data = m_process.readAllStandardOutput();
     const QString msg = m_outputCodec->toUnicode(
                 data.constData(), data.length(), &m_outputCodecState);
-    q->appendMessage(msg, StdOutFormat, false);
+    q->appendMessageChunk(msg, StdOutFormat);
 }
 
 void SimpleTargetRunnerPrivate::handleStandardError()
@@ -1387,7 +1387,7 @@ void SimpleTargetRunnerPrivate::handleStandardError()
     const QByteArray data = m_process.readAllStandardError();
     const QString msg = m_outputCodec->toUnicode(
                 data.constData(), data.length(), &m_errorCodecState);
-    q->appendMessage(msg, StdErrFormat, false);
+    q->appendMessageChunk(msg, StdErrFormat);
 }
 
 void SimpleTargetRunnerPrivate::start()
@@ -1766,14 +1766,19 @@ void RunWorker::reportFailure(const QString &msg)
  * Appends a message in the specified \a format to
  * the owning RunControl's \uicontrol{Application Output} pane.
  */
-void RunWorker::appendMessage(const QString &msg, OutputFormat format, bool appendNewLine)
+void RunWorker::appendMessage(const QString &msg, OutputFormat format)
 {
-    if (!appendNewLine || msg.endsWith('\n'))
+    if (msg.endsWith('\n'))
         emit d->runControl->appendMessage(msg, format);
     else
         emit d->runControl->appendMessage(msg + '\n', format);
 }
 
+void RunWorker::appendMessageChunk(const QString &msg, OutputFormat format)
+{
+    emit d->runControl->appendMessage(msg, format);
+}
+
 IDevice::ConstPtr RunWorker::device() const
 {
     return d->runControl->device();
diff --git a/src/plugins/projectexplorer/runcontrol.h b/src/plugins/projectexplorer/runcontrol.h
index ebb0ec54a0b..0ff9b8778e9 100644
--- a/src/plugins/projectexplorer/runcontrol.h
+++ b/src/plugins/projectexplorer/runcontrol.h
@@ -92,7 +92,8 @@ public:
     QVariant recordedData(const QString &channel) const;
 
     // Part of read-only interface of RunControl for convenience.
-    void appendMessage(const QString &msg, Utils::OutputFormat format, bool appendNewLine = true);
+    void appendMessage(const QString &msg, Utils::OutputFormat format);
+    void appendMessageChunk(const QString &msg, Utils::OutputFormat format);
     IDeviceConstPtr device() const;
 
     // States