diff --git a/crypto777/nanosrc/nn_config.h b/crypto777/nanosrc/nn_config.h
index dc864bfbd..0d4d15c2c 100755
--- a/crypto777/nanosrc/nn_config.h
+++ b/crypto777/nanosrc/nn_config.h
@@ -31,9 +31,9 @@
 #define NN_HAVE_SEMAPHORE 1 // must have
 
 // need one of following 3, listed in order of precedence, used by efd*
-#define NN_HAVE_EVENTFD 1
+//#define NN_HAVE_EVENTFD 1
 //#define NN_HAVE_PIPE 1
-//#define NN_HAVE_SOCKETPAIR 1
+#define NN_HAVE_SOCKETPAIR 1
 
 // need one of following 3, listed in order of precedence, used by poller*
 #define NN_USE_POLL 1