1 files changed, 2 insertions, 2 deletions
diff --git a/src/fd.hpp b/src/fd.hpp
index b7b2391..92cabf6 100644
--- a/src/fd.hpp
+++ b/src/fd.hpp
@@ -28,8 +28,8 @@
 
 namespace zmq
 {
-#ifdef _MSC_VER
-#if (_MSC_VER <= 1400)
+#ifdef ZMQ_HAVE_WINDOWS
+#if defined _MSC_VER &&_MSC_VER <= 1400
     typedef UINT_PTR fd_t;
     enum {retired_fd = (fd_t)(~0)}
 #else