diff --git a/src/concurrent/qtconcurrentthreadengine.h b/src/concurrent/qtconcurrentthreadengine.h
index 14e1cf375b9..62a8cd0b0c5 100644
--- a/src/concurrent/qtconcurrentthreadengine.h
+++ b/src/concurrent/qtconcurrentthreadengine.h
@@ -10,7 +10,6 @@
 
 #include <QtCore/qthreadpool.h>
 #include <QtCore/qfuture.h>
-#include <QtCore/qdebug.h>
 #include <QtCore/qexception.h>
 #include <QtCore/qwaitcondition.h>
 #include <QtCore/qatomic.h>
diff --git a/src/plugins/platforms/xcb/qxcbdrag.h b/src/plugins/platforms/xcb/qxcbdrag.h
index 5bbebecf318..1e6c6f8a733 100644
--- a/src/plugins/platforms/xcb/qxcbdrag.h
+++ b/src/plugins/platforms/xcb/qxcbdrag.h
@@ -16,8 +16,6 @@
 #include <qrect.h>
 #include <qxcbobject.h>
 
-#include <QtCore/QDebug>
-
 QT_REQUIRE_CONFIG(draganddrop);
 
 QT_BEGIN_NAMESPACE
diff --git a/src/testlib/qtestmouse.h b/src/testlib/qtestmouse.h
index e7a767258d7..6bb3a339257 100644
--- a/src/testlib/qtestmouse.h
+++ b/src/testlib/qtestmouse.h
@@ -24,8 +24,6 @@
 #include <QtWidgets/qwidget.h>
 #endif
 
-#include <QtCore/QDebug>
-
 QT_BEGIN_NAMESPACE
 
 Q_GUI_EXPORT void qt_handleMouseEvent(QWindow *window, const QPointF &local, const QPointF &global,
diff --git a/src/testlib/qtestwheel.h b/src/testlib/qtestwheel.h
index 564a586b4bb..1d77004e889 100644
--- a/src/testlib/qtestwheel.h
+++ b/src/testlib/qtestwheel.h
@@ -19,8 +19,6 @@
 #include <QtGui/qevent.h>
 #include <QtGui/qwindow.h>
 
-#include <QtCore/QDebug>
-
 QT_BEGIN_NAMESPACE
 
 Q_GUI_EXPORT void qt_handleWheelEvent(QWindow *window, const QPointF &local,
diff --git a/src/tools/moc/symbols.h b/src/tools/moc/symbols.h
index 869f7c793f5..bf3aa22f621 100644
--- a/src/tools/moc/symbols.h
+++ b/src/tools/moc/symbols.h
@@ -6,7 +6,6 @@
 #define SYMBOLS_H
 
 #include "token.h"
-#include <qdebug.h>
 #include <qhashfunctions.h>
 #include <qlist.h>
 #include <qstack.h>