diff --git a/zynq.nix b/zynq.nix
index ea1832d..d826d8d 100644
--- a/zynq.nix
+++ b/zynq.nix
@@ -36,6 +36,7 @@ in
       buildPhase =
         ''
         cd ${<artiq-zynq>}
+        export USER=hydra
         bash ${<artiq-zynq>}/remote_run.sh -h rpi-4 -o "-F /dev/null -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null -o LogLevel=ERROR -i /opt/hydra_id_rsa" -d ${artiq-zynq.zc706-simple-jtag}
 
         sleep 15