diff --git a/configure.ac b/configure.ac
index 024e833..b014074 100644
--- a/configure.ac
+++ b/configure.ac
@@ -480,10 +480,16 @@ AC_ARG_ENABLE(tqt,
         [HAVE_TQT=yes])
 
 if test "x$HAVE_TQT" = "xyes" ; then
-        PKG_CHECK_MODULES( QT3, [ qt-mt >= 3.0.0 ])
-        AC_SUBST(QT3_CFLAGS)
-        AC_SUBST(QT3_LIBS)
-	    QT3_PREFIX="`$PKG_CONFIG --variable=prefix qt-mt`/bin"
+        PKG_CHECK_MODULES( QT3, [ qt-mt >= 3.0.0 ], 
+	[AC_SUBST(QT3_CFLAGS)
+	AC_SUBST(QT3_LIBS)
+	QT3_PREFIX="`$PKG_CONFIG --variable=prefix qt-mt`/bin"
+	], 
+	[PKG_CHECK_MODULES( QT3, [ tqt-mt ] )
+	AC_SUBST(QT3_CFLAGS)
+	AC_SUBST(QT3_LIBS)
+	QT3_PREFIX="`$PKG_CONFIG --variable=prefix tqt-mt`/bin"
+	])
         AC_PATH_PROGS(MOC_QT3, [moc-tqt moc], no, [$QT3_PREFIX])
         if test "$MOC_QT3" = no; then
             AC_MSG_ERROR([Could not find QT3 moc])