diff --git a/kalyptus/kalyptus b/kalyptus/kalyptus
index 5bde3143..4a0041b4 100644
--- a/kalyptus/kalyptus
+++ b/kalyptus/kalyptus
@@ -589,7 +589,7 @@ LOOP:
 				     $p =~ m/^#\s*ifndef\s+QT_NO_STL/ or
 				     $p =~ m/^#\s*if\s+defined\s*\(Q_OS_/ or
 				     $p =~ m/^#\s*if\s+defined\(Q_CC_/ or
-				     $p =~ m/^#\s*if\s+defined\(QT_THREAD_SUPPORT/ or
+				     $p =~ m/^#\s*if\s+defined\(TQT_THREAD_SUPPORT/ or
 				     $p =~ m/^#\s*else/ or
 				     $p =~ m/^#\s*if\s+defined\(Q_FULL_TEMPLATE_INSTANTIATION/ or
 				     $p =~ m/^#\s*ifdef\s+QT_WORKSPACE_WINDOWMODE/ or