diff --git a/configure b/configure
index d608b58..eaa4baf 100755
--- a/configure
+++ b/configure
@@ -22,7 +22,7 @@ while [ $# -gt 0 ]; do
 			;;
 
 		--qtdir=*)
-			QTDIR=`expr "${1}" : "--qtdir=\(.*\)"`
+			TQTDIR=`expr "${1}" : "--qtdir=\(.*\)"`
 			shift
 			;;
 
@@ -42,26 +42,26 @@ echo "Configuring TQt Cryptographic Architecture (QCA) ..."
 if [ "$QC_DEBUG" = "Y" ]; then
 echo
 echo PREFIX=$PREFIX
-echo QTDIR=$QTDIR
+echo TQTDIR=$TQTDIR
 echo
 fi
 
 printf "Verifying TQt 3.x Multithreaded (MT) build environment ... "
 
-if [ -z "$QTDIR" ]; then
+if [ -z "$TQTDIR" ]; then
 	if [ "$QC_DEBUG" = "Y" ]; then
-		echo \$QTDIR not set... trying to find Qt manually
+		echo \$TQTDIR not set... trying to find Qt manually
 	fi
 	for p in /usr/lib/tqt /usr/share/tqt /usr/share/tqt3 /usr/local/lib/tqt /usr/local/share/tqt /usr/lib/tqt3 /usr/local/lib/tqt3 /usr/lib/qt /usr/share/qt /usr/share/qt3 /usr/local/lib/qt /usr/local/share/qt /usr/lib/qt3 /usr/local/lib/qt3 /usr/lib64/tqt /usr/local/lib64/tqt /usr/lib64/tqt3 /usr/local/lib64/tqt3 /usr/lib64/qt /usr/local/lib64/qt /usr/lib64/qt3 /usr/local/lib64/qt3 /usr/X11R6/share/qt /usr/qt/3 ; do
 		if [ -d "$p/mkspecs" ]; then
-			QTDIR=$p
+			TQTDIR=$p
 			break;
 		fi;
 	done
-	if [ -z "$QTDIR" ]; then
+	if [ -z "$TQTDIR" ]; then
 		echo fail
 		echo
-		echo Unable to find Qt 'mkspecs'. Please set QTDIR
+		echo Unable to find Qt 'mkspecs'. Please set TQTDIR
 		echo manually. Perhaps you need to install Qt 3
 		echo development utilities. You may download them either
 		echo from the vendor of your operating system or from
@@ -71,9 +71,9 @@ if [ -z "$QTDIR" ]; then
 	fi
 fi
 
-if [ ! -x "$QTDIR/bin/tqmake" ]; then
+if [ ! -x "$TQTDIR/bin/tqmake" ]; then
 	if [ "$QC_DEBUG" = "Y" ]; then
-		echo Warning: tqmake not in \$QTDIR/bin/tqmake
+		echo Warning: tqmake not in \$TQTDIR/bin/tqmake
 		echo trying to find it in \$PATH
 	fi
 	qm=`type -p tqmake`
@@ -85,15 +85,15 @@ if [ ! -x "$QTDIR/bin/tqmake" ]; then
 		echo fail
 		echo
 		echo Sorry, you seem to have a very unusual setup,
-		echo or I missdetected \$QTDIR=$QTDIR
+		echo or I missdetected \$TQTDIR=$TQTDIR
 		echo
-		echo Please set \$QTDIR manually and make sure that
-		echo \$QTDIR/bin/tqmake exists.
+		echo Please set \$TQTDIR manually and make sure that
+		echo \$TQTDIR/bin/tqmake exists.
 		echo
 		exit 1;
 	fi
 else
-	qm=$QTDIR/bin/tqmake
+	qm=$TQTDIR/bin/tqmake
 fi
 
 gen_files() {
@@ -430,15 +430,15 @@ EOT
 }
 
 export PREFIX
-export QTDIR
+export TQTDIR
 rm -rf .qconftemp
 (
 	mkdir .qconftemp
 	gen_files .qconftemp
 	cd .qconftemp
 	$qm conf.pro >/dev/null
-	QTDIR=$QTDIR make clean >/dev/null 2>&1
-	QTDIR=$QTDIR make >../conf.log 2>&1
+	TQTDIR=$TQTDIR make clean >/dev/null 2>&1
+	TQTDIR=$TQTDIR make >../conf.log 2>&1
 )
 
 if [ "$?" != "0" ]; then
@@ -447,12 +447,12 @@ if [ "$?" != "0" ]; then
 	echo
 	echo "There was an error compiling 'conf'.  Be sure you have a proper"
 	echo "TQt 3.x Multithreaded (MT) build environment set up."
-	if [ ! -f "$QTDIR/lib/libtqt-mt.so.3" ]; then
-		if [ ! -f "$QTDIR/lib64/libtqt-mt.so.3" ]; then
+	if [ ! -f "$TQTDIR/lib/libtqt-mt.so.3" ]; then
+		if [ ! -f "$TQTDIR/lib64/libtqt-mt.so.3" ]; then
 			echo
 			echo "One possible reason is that you don't have"
-			echo "libtqt-mt.so.3 installed in $QTDIR/lib/"
-			echo "or $QTDIR/lib64/."
+			echo "libtqt-mt.so.3 installed in $TQTDIR/lib/"
+			echo "or $TQTDIR/lib64/."
 		fi
 	fi
 	echo
@@ -487,7 +487,7 @@ if [ "$?" != "0" ]; then
 	exit 1;
 fi
 cat >Makefile.tmp <<EOT
-export QTDIR = $QTDIR
+export TQTDIR = $TQTDIR
 EOT
 cat Makefile >> Makefile.tmp
 rm -f Makefile