diff --git a/src/tools/moc/moc.pro b/src/tools/moc/moc.pro
index 5c96c96a4c..45b063e0b0 100644
--- a/src/tools/moc/moc.pro
+++ b/src/tools/moc/moc.pro
@@ -1,7 +1,7 @@
 TEMPLATE	= app
 TARGET		= moc
 
-DEFINES         += QT_MOC QT_NO_CAST_FROM_BYTEARRAY
+DEFINES         += QT_MOC QT_NO_CAST_FROM_BYTEARRAY QT_NO_COMPRESS
 DESTDIR         = ../../../bin
 INCLUDEPATH	+= . 
 DEPENDPATH	+= .