diff --git a/httplib.h b/httplib.h
index 9993b6b..4937193 100644
--- a/httplib.h
+++ b/httplib.h
@@ -90,7 +90,7 @@ typedef int socket_t;
 #define CPPHTTPLIB_READ_TIMEOUT_SECOND 5
 #define CPPHTTPLIB_READ_TIMEOUT_USECOND 0
 #define CPPHTTPLIB_REQUEST_URI_MAX_LENGTH 8192
-#define CPPHTTPLIB_PAYLOAD_MAX_LENGTH std::numeric_limits<size_t>::max()
+#define CPPHTTPLIB_PAYLOAD_MAX_LENGTH (std::numeric_limits<size_t>::max)()
 
 namespace httplib {