diff --git a/thirdparty/zlib/zlib.h b/thirdparty/zlib/zlib.h
index 90d48323..50fe881a 100644
--- a/thirdparty/zlib/zlib.h
+++ b/thirdparty/zlib/zlib.h
@@ -39,6 +39,8 @@
 
 #pragma once
 
+#include <TargetConditionals.h>
+
 #if __cplusplus
 extern "C" {
 #endif