diff --git a/qtinterface/interface_tqt3/tqmap.h b/qtinterface/interface_tqt3/tqmap.h
index 2dadc93..412abbe 100644
--- a/qtinterface/interface_tqt3/tqmap.h
+++ b/qtinterface/interface_tqt3/tqmap.h
@@ -785,7 +785,7 @@ public:
     void remove( iterator it ) { detach(); sh->remove( it ); }
     void remove( const Key& k );
 
-#if defined(Q_FULL_TEMPLATE_INSTANTIATION)
+#if defined(TQ_FULL_TEMPLATE_INSTANTIATION)
     bool operator==( const TQMap<Key,T>& ) const { return FALSE; }
 #ifndef TQT_NO_STL
     bool operator==( const std::map<Key,T>& ) const { return FALSE; }