diff --git a/HTMLtree.c b/HTMLtree.c
index e6142ae..84271c4 100644
--- a/HTMLtree.c
+++ b/HTMLtree.c
@@ -310,7 +310,7 @@
 
     if (cur == NULL) {
 #ifdef DEBUG_TREE
-        fprintf(stderr, "xmlDocDumpMemory : document == NULL\n");
+        fprintf(stderr, "htmlxmlDocDumpMemory : document == NULL\n");
 #endif
 	*mem = NULL;
 	*size = 0;
@@ -343,7 +343,7 @@
 
     if (cur == NULL) {
 #ifdef DEBUG_TREE
-        fprintf(stderr, "xmlDocDump : document == NULL\n");
+        fprintf(stderr, "htmlDocDump : document == NULL\n");
 #endif
 	return;
     }