diff --git a/crypto777/nanosrc/nn_config.h b/crypto777/nanosrc/nn_config.h
index 39ac68eb1..98ec95121 100755
--- a/crypto777/nanosrc/nn_config.h
+++ b/crypto777/nanosrc/nn_config.h
@@ -46,7 +46,7 @@
 
 #define NN_HAVE_MSG_CONTROL 0
 //#define STANDALONE 1
-#define PNACL_msg printf
+#define PNACL_msg 
 
 #if !defined(WIN32)
 //#define NN_ENABLE_EXTRA 1