diff --git a/Installation/config/support/S80-QT3MT b/Installation/config/support/S80-QT3MT
index da4aadd09bc..b30db88b5cc 100644
--- a/Installation/config/support/S80-QT3MT
+++ b/Installation/config/support/S80-QT3MT
@@ -6,7 +6,7 @@ PROVIDES = QT
 CXXFLAGS = 
 LDFLAGS = 
 LIBS = qt-mt
-REQUIRES = 
+REQUIRES = DOLLAR_QTDIR 
 INCOMPATIBLE = DOLLAR_WINDOWS_COMPILER
 STDINCLDIRS = /usr/include/qt3:${QTDIR}/include
 INCLTHING = qglobal.h