diff --git a/src/plugins/debugger/debuggerengine.cpp b/src/plugins/debugger/debuggerengine.cpp
index 2c2b80dce1e..656b4d9c0dc 100644
--- a/src/plugins/debugger/debuggerengine.cpp
+++ b/src/plugins/debugger/debuggerengine.cpp
@@ -853,7 +853,7 @@ void DebuggerEnginePrivate::setupViews()
 
     m_perspective->addWindow(m_stackWindow, Perspective::SplitVertical, nullptr);
     m_perspective->addWindow(m_breakWindow, Perspective::SplitHorizontal, m_stackWindow);
-    m_perspective->addWindow(m_threadsWindow, Perspective::AddToTab, m_breakWindow,false);
+    m_perspective->addWindow(m_threadsWindow, Perspective::AddToTab, m_breakWindow);
     m_perspective->addWindow(m_modulesWindow, Perspective::AddToTab, m_threadsWindow, false);
     m_perspective->addWindow(m_sourceFilesWindow, Perspective::AddToTab, m_modulesWindow, false);
     m_perspective->addWindow(m_localsAndInspectorWindow, Perspective::AddToTab, nullptr, true, Qt::RightDockWidgetArea);