diff --git a/3rdparty/zint-2.6.1/backend/emf.c b/3rdparty/zint-2.6.1/backend/emf.c
index 94c1425..8e9ba0f 100644
--- a/3rdparty/zint-2.6.1/backend/emf.c
+++ b/3rdparty/zint-2.6.1/backend/emf.c
@@ -35,7 +35,10 @@
 #include <stdio.h>
 #include <string.h>
 #include <math.h>
+#include <stdlib.h>
+#ifdef _MSC_VER
 #include <malloc.h>
+#endif
 #include "common.h"
 #include "emf.h"