diff --git a/make/qtexe.mk b/make/qtexe.mk
index 86ef5032..088a3f1b 100644
--- a/make/qtexe.mk
+++ b/make/qtexe.mk
@@ -4,6 +4,10 @@
 # $Id$
 
 USE_QT = true
+ifndef QT_VERSION
 QT_VERSION = 4
+endif
 
 include $(MODDIR)/make/exe.mk
+
+clean: mocclean uicclean rccclean