diff --git a/FAQ b/FAQ
index 1d540e2..263c299 100644
--- a/FAQ
+++ b/FAQ
@@ -83,10 +83,10 @@ Q:  The configure script fails and tells me, it can't find my Qt
 A:  There are two things you should check:
     1. It may be that the Qt header files are not installed. If this is true,
        install them and run the configure script again.
-    2. The QTDIR environment variable might not be set properly or at all.
+    2. The TQTDIR environment variable might not be set properly or at all.
        Check for the following line in your ~/.bashrc file
 
-       export QTDIR=PREFIX
+       export TQTDIR=PREFIX
 
        and add it, if it is not present. Replace PREFIX with the prefix of your
        Qt installation. Run
@@ -95,7 +95,7 @@ A:  There are two things you should check:
 
        from the shell. Now, you're set for a second configuration attempt.
 
-     If the header files are installed and the QTDIR variable is set, but you
+     If the header files are installed and the TQTDIR variable is set, but you
      still get the same error, you might want to try to pass the
      '--with-qt-includes=/path/to/header/files' option to the configure script.
 
diff --git a/acinclude.m4 b/acinclude.m4
index aebd2f7..869e18c 100644
--- a/acinclude.m4
+++ b/acinclude.m4
@@ -296,7 +296,7 @@ EOT
 
 dnl ------------------------------------------------------------------------
 dnl Find the meta object compiler and the ui compiler in the PATH,
-dnl in $QTDIR/bin, and some more usual places
+dnl in $TQTDIR/bin, and some more usual places
 dnl ------------------------------------------------------------------------
 dnl
 AC_DEFUN([AC_PATH_TQT_MOC_UIC],
@@ -1223,16 +1223,16 @@ else
 fi
 
 if test $kde_qtver = 4; then
-  kde_qt_dirs="$QTDIR /usr/lib/qt4 /usr/lib/qt /usr/share/qt4"
+  kde_qt_dirs="$TQTDIR /usr/lib/qt4 /usr/lib/qt /usr/share/qt4"
 fi
 if test $kde_qtver = 3; then
-  kde_qt_dirs="$QTDIR /usr/lib/qt3 /usr/lib/qt /usr/share/qt3"
+  kde_qt_dirs="$TQTDIR /usr/lib/qt3 /usr/lib/qt /usr/share/qt3"
 fi
 if test $kde_qtver = 2; then
-   kde_qt_dirs="$QTDIR /usr/lib/qt2 /usr/lib/qt"
+   kde_qt_dirs="$TQTDIR /usr/lib/qt2 /usr/lib/qt"
 fi
 if test $kde_qtver = 1; then
-   kde_qt_dirs="$QTDIR /usr/lib/qt"
+   kde_qt_dirs="$TQTDIR /usr/lib/qt"
 fi
 ])
 
@@ -5533,10 +5533,10 @@ if test "${with_qt_dir+set}" = set; then
   kde_qtdir="$with_qt_dir"
 fi
 
-AC_FIND_FILE(qsql.html, [ $kde_qtdir/doc/html $QTDIR/doc/html /usr/share/doc/packages/qt3/html /usr/lib/qt/doc /usr/lib/qt3/doc /usr/lib/qt3/doc/html /usr/doc/qt3/html /usr/doc/qt3 /usr/share/doc/qt3-doc /usr/share/qt3/doc/html /usr/X11R6/share/doc/qt/html ], QTDOCDIR)
-AC_MSG_RESULT($QTDOCDIR)
+AC_FIND_FILE(qsql.html, [ $kde_qtdir/doc/html $TQTDIR/doc/html /usr/share/doc/packages/qt3/html /usr/lib/qt/doc /usr/lib/qt3/doc /usr/lib/qt3/doc/html /usr/doc/qt3/html /usr/doc/qt3 /usr/share/doc/qt3-doc /usr/share/qt3/doc/html /usr/X11R6/share/doc/qt/html ], TQTDOCDIR)
+AC_MSG_RESULT($TQTDOCDIR)
 
-AC_SUBST(QTDOCDIR)
+AC_SUBST(TQTDOCDIR)
 
 KDE_FIND_PATH(dot, DOT, [], [])
 if test -n "$DOT"; then
@@ -5554,7 +5554,7 @@ AC_SUBST(DOXYGEN_PROJECT_NAME)
 AC_SUBST(DOXYGEN_PROJECT_NUMBER)
 
 KDE_HAS_DOXYGEN=no
-if test -n "$DOXYGEN" && test -x "$DOXYGEN" && test -f $QTDOCDIR/qsql.html; then
+if test -n "$DOXYGEN" && test -x "$DOXYGEN" && test -f $TQTDOCDIR/qsql.html; then
   KDE_HAS_DOXYGEN=yes
 fi
 AC_SUBST(KDE_HAS_DOXYGEN)
diff --git a/doc/en/index.docbook b/doc/en/index.docbook
index 83c5306..45dc821 100644
--- a/doc/en/index.docbook
+++ b/doc/en/index.docbook
@@ -4928,14 +4928,14 @@ in the meantime.</para>
 <para><emphasis role="bold">Solution:</emphasis> There are two things that should check:</para>
 <itemizedlist>
 <listitem><para>Maybe the Qt header files are not installed. If this is the case, install them and run the configure script again.</para></listitem>
-<listitem><para>The <envar>QTDIR</envar> environment variable might not be set properly or at all. Make sure you export it in your shell's configuration file.</para>
+<listitem><para>The <envar>TQTDIR</envar> environment variable might not be set properly or at all. Make sure you export it in your shell's configuration file.</para>
 <para>If you are using the bash, check for the following line in your <filename>~/.bashrc</filename> file</para>
-<screen>export QTDIR=PREFIX</screen>
+<screen>export TQTDIR=PREFIX</screen>
 <para>and add it, if it is not present. Replace PREFIX with the prefix of your Qt installation. Run</para>
 <screen><prompt>$</prompt> <userinput><command>source</command> ~/.bashrc</userinput></screen>
 <para>from the shell. Now, you're set for a second configuration attempt.</para></listitem>
 </itemizedlist>
-<para>If the header files are installed and the <envar>QTDIR</envar> variable is set, but you still get the same error, you might want to try to pass the <option>--with-qt-includes=/path/to/header/files</option> option to the configure script.</para>
+<para>If the header files are installed and the <envar>TQTDIR</envar> variable is set, but you still get the same error, you might want to try to pass the <option>--with-qt-includes=/path/to/header/files</option> option to the configure script.</para>
 </listitem>
 
 <listitem id="trouble_shooting_no_kde">