diff --git a/libvips/foreign/dzsave.c b/libvips/foreign/dzsave.c
index 715aa43f..2f2a865e 100644
--- a/libvips/foreign/dzsave.c
+++ b/libvips/foreign/dzsave.c
@@ -140,6 +140,8 @@
 #include <stdlib.h>
 #include <string.h>
 
+#include <libxml/parser.h>
+
 #include <vips/vips.h>
 #include <vips/internal.h>