diff --git a/src/xmlquery.c b/src/xmlquery.c
index dc2bfd31..9c1e03fb 100644
--- a/src/xmlquery.c
+++ b/src/xmlquery.c
@@ -12,6 +12,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
+#include <stdlib.h>
 #include <assert.h>
 
 #if YAZ_HAVE_XML2