diff --git a/q15/src/gameboard.cpp b/q15/src/gameboard.cpp
index 5b97e571..51767064 100644
--- a/q15/src/gameboard.cpp
+++ b/q15/src/gameboard.cpp
@@ -11,13 +11,13 @@
 
 #include <stdlib.h>
 
-#include <ntqapplication.h>
-#include <ntqpainter.h>
-#include <ntqcursor.h>
-#include <ntqmessagebox.h>
-#include <ntqfiledialog.h>
-#include <ntqdatetime.h>
-#include <ntqwmatrix.h>
+#include <tqapplication.h>
+#include <tqpainter.h>
+#include <tqcursor.h>
+#include <tqmessagebox.h>
+#include <tqfiledialog.h>
+#include <tqdatetime.h>
+#include <tqwmatrix.h>
 
 #include "gameboard.h"
 
diff --git a/q15/src/gameboard.h b/q15/src/gameboard.h
index 12d305b8..8150acb6 100644
--- a/q15/src/gameboard.h
+++ b/q15/src/gameboard.h
@@ -14,10 +14,10 @@
 
 #include <stdlib.h>
 
-#include <ntqwidget.h>
-#include <ntqlabel.h>
-#include <ntqpixmap.h>
-#include <ntqtimer.h>
+#include <tqwidget.h>
+#include <tqlabel.h>
+#include <tqpixmap.h>
+#include <tqtimer.h>
 
 
 class BoardItem:public TQLabel
diff --git a/q15/src/main.cpp b/q15/src/main.cpp
index b438794f..849a4ee6 100644
--- a/q15/src/main.cpp
+++ b/q15/src/main.cpp
@@ -11,7 +11,7 @@
 
 #include <stdlib.h>
 
-#include <ntqapplication.h>
+#include <tqapplication.h>
 
 #include "mainwindow.h"
 
diff --git a/q15/src/mainwindow.cpp b/q15/src/mainwindow.cpp
index 147e8d8e..593b0fc9 100644
--- a/q15/src/mainwindow.cpp
+++ b/q15/src/mainwindow.cpp
@@ -9,7 +9,7 @@
  * Hacked by:
  */
 
-#include <ntqapplication.h>
+#include <tqapplication.h>
 
 #include "mainwindow.h"
 
diff --git a/q15/src/mainwindow.h b/q15/src/mainwindow.h
index c45b0c8d..2b898f7e 100644
--- a/q15/src/mainwindow.h
+++ b/q15/src/mainwindow.h
@@ -14,9 +14,9 @@
 
 #include <stdlib.h>
 
-#include <ntqmainwindow.h>
-#include <ntqmenubar.h>
-#include <ntqpopupmenu.h>
+#include <tqmainwindow.h>
+#include <tqmenubar.h>
+#include <tqpopupmenu.h>
 
 #include "gameboard.h"