diff --git a/src/plugins/projectexplorer/applicationlauncher.cpp b/src/plugins/projectexplorer/applicationlauncher.cpp
index 64577eb28d9..4fe94198340 100644
--- a/src/plugins/projectexplorer/applicationlauncher.cpp
+++ b/src/plugins/projectexplorer/applicationlauncher.cpp
@@ -126,7 +126,7 @@ ApplicationLauncher::ApplicationLauncher(QObject *parent)
     connect(WinDebugInterface::instance(), SIGNAL(cannotRetrieveDebugOutput()),
             this, SLOT(cannotRetrieveDebugOutput()));
     connect(WinDebugInterface::instance(), SIGNAL(debugOutput(qint64,QString)),
-            this, SLOT(checkDebugOutput(qint64,QString)));
+            this, SLOT(checkDebugOutput(qint64,QString)), Qt::BlockingQueuedConnection);
 #endif
 #ifdef WITH_JOURNALD
     connect(JournaldWatcher::instance(), &JournaldWatcher::journaldOutput,