diff --git a/win32/libxml2.def.src b/win32/libxml2.def.src
index 24d96847..d4bd12ed 100644
--- a/win32/libxml2.def.src
+++ b/win32/libxml2.def.src
@@ -356,6 +356,7 @@ xmlCleanupPredefinedEntities
 	htmlNodeDumpFileFormat
 	htmlSaveFileEnc
 	htmlSaveFileFormat
+	htmlNodeDumpOutput
 	htmlNodeDumpFormatOutput
 	htmlDocContentDumpOutput
 	htmlDocContentDumpFormatOutput