diff --git a/src/common/libremoteio.h b/src/common/libremoteio.h
--- a/src/common/libremoteio.h
+++ b/src/common/libremoteio.h
@@ -58,6 +58,9 @@ struct remoteio {
   enum remoteio_method method;
   struct remoteio_opts *opts;
   struct execio *execio;
+#ifndef WINDOWS
+  int sock;
+#endif
 };