diff --git a/zynq.nix b/zynq.nix
index 540f892..d3d7329 100644
--- a/zynq.nix
+++ b/zynq.nix
@@ -48,8 +48,7 @@ in
       buildPhase =
         ''
         echo Power cycling board...
-        (echo b; sleep 5; echo B) | nc -N 192.168.1.31 3131
-        sleep 5
+        (echo b; sleep 5; echo B; sleep 5) | nc 192.168.1.31 3131
         echo Power cycle done.
 
         export USER=hydra