diff --git a/kdeui/kcmenumngr.h b/kdeui/kcmenumngr.h
index 7103193ba..fe3e117e2 100644
--- a/kdeui/kcmenumngr.h
+++ b/kdeui/kcmenumngr.h
@@ -24,6 +24,9 @@
 class TQWidget;
 class TQPopupMenu;
 class KContextMenuManagerPrivate;
+
+#include <tqt.h>
+
 #include <tqobject.h>
 #include <tqptrdict.h>
 #include <tqkeysequence.h>
diff --git a/kdeui/klineeditdlg.h b/kdeui/klineeditdlg.h
index 122a19c1d..6e6fc2d89 100644
--- a/kdeui/klineeditdlg.h
+++ b/kdeui/klineeditdlg.h
@@ -20,11 +20,13 @@
 #ifndef __klineeditdlg_h__
 #define __klineeditdlg_h__
 
-class KLineEdit;
-class TQValidator;
+#include <tqt.h>
 
 #include <kdialogbase.h>
 
+class KLineEdit;
+class TQValidator;
+
 /**
  * @deprecated
  * Please use KInputDialog instead.
diff --git a/kio/kfile/kfileiconview.cpp b/kio/kfile/kfileiconview.cpp
index 4f0dbf9e1..a4c65924d 100644
--- a/kio/kfile/kfileiconview.cpp
+++ b/kio/kfile/kfileiconview.cpp
@@ -18,6 +18,7 @@
    the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
    Boston, MA 02110-1301, USA.
 */
+#include <tqt.h>
 
 #include <tqfontmetrics.h>
 #include <tqkeycode.h>