diff --git a/validate/win32/common/libgstvalidate.def b/validate/win32/common/libgstvalidate.def
index 2d50790427..5db85043d9 100644
--- a/validate/win32/common/libgstvalidate.def
+++ b/validate/win32/common/libgstvalidate.def
@@ -45,6 +45,7 @@ EXPORTS
 	gst_validate_media_descriptor_writer_add_pad
 	gst_validate_media_descriptor_writer_add_taglist
 	gst_validate_media_descriptor_writer_add_tags
+	gst_validate_media_descriptor_writer_flags_get_type
 	gst_validate_media_descriptor_writer_get_type
 	gst_validate_media_descriptor_writer_new
 	gst_validate_media_descriptor_writer_new_discover