diff --git a/kdirstat/kactivitytracker.cpp b/kdirstat/kactivitytracker.cpp
index 5b198f0..60f0cf1 100644
--- a/kdirstat/kactivitytracker.cpp
+++ b/kdirstat/kactivitytracker.cpp
@@ -9,7 +9,7 @@
  */
 
 
-#include <kapp.h>
+#include <tdeapplication.h>
 #include <kdebug.h>
 #include <tdeconfig.h>
 #include "kactivitytracker.h"
diff --git a/kdirstat/kcleanup.cpp b/kdirstat/kcleanup.cpp
index a6e2694..0028aa7 100644
--- a/kdirstat/kcleanup.cpp
+++ b/kdirstat/kcleanup.cpp
@@ -9,10 +9,9 @@
 
 
 #include <stdlib.h>
-#include <tqapplication.h>
 #include <tqregexp.h>
 
-#include <kapp.h>
+#include <tdeapplication.h>
 #include <kprocess.h>
 #include <kdebug.h>
 #include <tdemessagebox.h>
diff --git a/kdirstat/kdirstatapp.cpp b/kdirstat/kdirstatapp.cpp
index da2ea40..d8fd54d 100644
--- a/kdirstat/kdirstatapp.cpp
+++ b/kdirstat/kdirstatapp.cpp
@@ -16,7 +16,7 @@
 
 #include <tdeaccel.h>
 #include <tdeaction.h>
-#include <kapp.h>
+#include <tdeapplication.h>
 #include <tdeconfig.h>
 #include <tdefiledialog.h>
 #include <kiconloader.h>
diff --git a/kdirstat/kdirstatapp.h b/kdirstat/kdirstatapp.h
index 25bd40d..57f88c6 100644
--- a/kdirstat/kdirstatapp.h
+++ b/kdirstat/kdirstatapp.h
@@ -18,7 +18,7 @@
 #   include <config.h>
 #endif
 
-#include <kapp.h>
+#include <tdeapplication.h>
 #include <tdemainwindow.h>
 #include "kdirtree.h"
 
diff --git a/kdirstat/kdirtree.cpp b/kdirstat/kdirtree.cpp
index 28c28d6..b1bea11 100644
--- a/kdirstat/kdirtree.cpp
+++ b/kdirstat/kdirtree.cpp
@@ -12,7 +12,7 @@
 #include <string.h>
 #include <sys/errno.h>
 #include <tqtimer.h>
-#include <kapp.h>
+#include <tdeapplication.h>
 #include <tdelocale.h>
 #include <tdeconfig.h>
 #include "kdirtree.h"
diff --git a/kdirstat/kdirtreeview.cpp b/kdirstat/kdirtreeview.cpp
index 748e7c5..4d3c168 100644
--- a/kdirstat/kdirtreeview.cpp
+++ b/kdirstat/kdirtreeview.cpp
@@ -16,7 +16,7 @@
 #include <tqheader.h>
 #include <tqpopupmenu.h>
 
-#include <kapp.h>
+#include <tdeapplication.h>
 #include <tdelocale.h>
 #include <tdeglobal.h>
 #include <tdeglobalsettings.h>
diff --git a/kdirstat/kfeedback.cpp b/kdirstat/kfeedback.cpp
index 69c7e07..f9a87bd 100644
--- a/kdirstat/kfeedback.cpp
+++ b/kdirstat/kfeedback.cpp
@@ -16,7 +16,7 @@
 #include <tqhbox.h>
 
 #include <tdeglobal.h>
-#include <kapp.h>
+#include <tdeapplication.h>
 #include <tdelocale.h>
 #include <kdebug.h>
 #include <tdeaboutdata.h>
diff --git a/kdirstat/ktreemaptile.cpp b/kdirstat/ktreemaptile.cpp
index 5293a97..aa91181 100644
--- a/kdirstat/ktreemaptile.cpp
+++ b/kdirstat/ktreemaptile.cpp
@@ -11,7 +11,7 @@
 #include <math.h>
 #include <algorithm>
 
-#include <kapp.h>
+#include <tdeapplication.h>
 #include <tdelocale.h>
 #include <tdeglobal.h>
 #include <tqimage.h>
diff --git a/kdirstat/ktreemapview.cpp b/kdirstat/ktreemapview.cpp
index 9e882d8..50efbe7 100644
--- a/kdirstat/ktreemapview.cpp
+++ b/kdirstat/ktreemapview.cpp
@@ -13,7 +13,7 @@
 #include <tqevent.h>
 #include <tqregexp.h>
 
-#include <kapp.h>
+#include <tdeapplication.h>
 #include <tdeconfig.h>
 #include <tdeglobal.h>
 #include <tdelocale.h>