diff --git a/debugXML.c b/debugXML.c
index 0da87e5..cd87ddc 100644
--- a/debugXML.c
+++ b/debugXML.c
@@ -1538,7 +1538,7 @@
     return (0);
 }
 
-#ifdef XML_TREE_ENABLED
+#ifdef LIBXML_TREE_ENABLED
 /**
  * xmlShellSetBase:
  * @ctxt:  the shell context