diff --git a/INSTALL b/INSTALL
index d6881ba..890226d 100644
--- a/INSTALL
+++ b/INSTALL
@@ -9,8 +9,8 @@ cmake <this source directory> \
   -DCMAKE_INSTALL_PREFIX=/opt/trinity \
   -DCMAKE_VERBOSE_MAKEFILE=ON \
   -DWITH_QT3=ON \
-  -DQTDIR=/opt/qt \
-  -DQT_LIBRARY_DIRS=/opt/qt/lib \
+  -DTQTDIR=/opt/qt \
+  -DTQT_LIBRARY_DIRS=/opt/qt/lib \
   -DBUILD_ALL=ON
 make VERBOSE=1