diff --git a/kxsldbg/kxsldbgpart/kxsldbg_part.cpp b/kxsldbg/kxsldbgpart/kxsldbg_part.cpp
index e62666eb..6b723c68 100644
--- a/kxsldbg/kxsldbgpart/kxsldbg_part.cpp
+++ b/kxsldbg/kxsldbgpart/kxsldbg_part.cpp
@@ -54,7 +54,7 @@
 #include <tqtextbrowser.h>
 #include <tqmessagebox.h>
 #include <tqlineedit.h>
-#include <tqdockwindow.h>
+#include <tqdoctwindow.h>
 #include <tqpushbutton.h>
 #include <tqinputdialog.h>
 #include <tqobjectlist.h>
diff --git a/lib/compatibility/kmdi/qextmdi/kdockwidget.cpp b/lib/compatibility/kmdi/qextmdi/kdockwidget.cpp
index b233202f..f4bd138b 100644
--- a/lib/compatibility/kmdi/qextmdi/kdockwidget.cpp
+++ b/lib/compatibility/kmdi/qextmdi/kdockwidget.cpp
@@ -38,7 +38,7 @@
 #include <klocale.h>
 #include <ktoolbar.h>
 #include <kpopupmenu.h>
-#include <kwin.h>
+#include <twin.h>
 #include <kdebug.h>
 #include <kglobalsettings.h>
 
diff --git a/quanta/parts/kafka/kafkahtmlpart.h b/quanta/parts/kafka/kafkahtmlpart.h
index c8ff05f0..c6e79a43 100644
--- a/quanta/parts/kafka/kafkahtmlpart.h
+++ b/quanta/parts/kafka/kafkahtmlpart.h
@@ -26,7 +26,7 @@
 
 #include <tqstringlist.h>
 #include <tqptrlist.h>
-#include <tqdockwindow.h>
+#include <tqdoctwindow.h>
 #include <tqevent.h>
 
 #include <dom/dom_node.h>
diff --git a/quanta/src/document.cpp b/quanta/src/document.cpp
index b2663e27..843c83c7 100644
--- a/quanta/src/document.cpp
+++ b/quanta/src/document.cpp
@@ -33,7 +33,7 @@
 
 // KDE includes
 #include <kapplication.h>
-#include <kwin.h>
+#include <twin.h>
 #include <klocale.h>
 #include <kaction.h>
 #include <kactionclasses.h>
diff --git a/quanta/src/kqapp.cpp b/quanta/src/kqapp.cpp
index 07ac5a1e..edd4230b 100644
--- a/quanta/src/kqapp.cpp
+++ b/quanta/src/kqapp.cpp
@@ -20,7 +20,7 @@
 
 #include <kconfig.h>
 #include <kdebug.h>
-#include <kwin.h>
+#include <twin.h>
 #include <kcmdlineargs.h>
 #include <kurl.h>
 #include <kiconloader.h>