diff --git a/kmailcvt/filter_sylpheed.cpp b/kmailcvt/filter_sylpheed.cpp
index e8f4a66a..bf8427c2 100644
--- a/kmailcvt/filter_sylpheed.cpp
+++ b/kmailcvt/filter_sylpheed.cpp
@@ -187,7 +187,7 @@ void FilterSylpheed::readMarkFile( FilterInfo *info, const TQString &path, TQDic
     
     TQDataStream stream(&file);
 
-    if (Q_BYTE_ORDER == Q_LITTLE_ENDIAN)
+    if (TQ_BYTE_ORDER == TQ_LITTLE_ENDIAN)
         stream.setByteOrder(TQDataStream::LittleEndian);