diff --git a/lib/pure/sockets.nim b/lib/pure/sockets.nim
index 328f9cb9ec..c7b6098565 100755
--- a/lib/pure/sockets.nim
+++ b/lib/pure/sockets.nim
@@ -1297,6 +1297,8 @@ proc send*(socket: TSocket, data: pointer, size: int): int {.
   when defined(windows) or defined(macosx):
     result = send(socket.fd, data, size.cint, 0'i32)
   else:
+    when not defined(MSG_NOSIGNAL): 
+      const MSG_NOSIGNAL = 0
     result = send(socket.fd, data, size, int32(MSG_NOSIGNAL))
 
 proc send*(socket: TSocket, data: string) {.tags: [FWriteIO].} =