diff --git a/SConstruct b/SConstruct
index a699008..3c6fa6b 100644
--- a/SConstruct
+++ b/SConstruct
@@ -157,7 +157,7 @@ for dir in dirs:
 env.Append( CPPFLAGS = ['-DQT_NO_TRANSLATION'] )
 
 ## Add this define if you want to use qthreads
-#env.Append( CPPFLAGS = ['-DQT_THREAD_SUPPORT', '-D_REENTRANT'] )
+#env.Append( CPPFLAGS = ['-DTQT_THREAD_SUPPORT', '-D_REENTRANT'] )
 
 ## To use kdDebug(intvalue)<<"some trace"<<endl; you need to define -DDEBUG - it is done
 ## in generic.py automatically when you do scons configure debug=1