diff --git a/lib/libqof/qof/qofquerycore.c b/lib/libqof/qof/qofquerycore.c
index 69b5a682a0..bf29a01b23 100644
--- a/lib/libqof/qof/qofquerycore.c
+++ b/lib/libqof/qof/qofquerycore.c
@@ -24,6 +24,7 @@
 #include "config.h"
 
 #include <glib.h>
+#include <stdlib.h>
 
 #include "qof.h"
 #include "qofquerycore-p.h"