diff --git a/nixbld-etc-nixos/configuration.nix b/nixbld-etc-nixos/configuration.nix
index 5367db7..98aa192 100644
--- a/nixbld-etc-nixos/configuration.nix
+++ b/nixbld-etc-nixos/configuration.nix
@@ -199,7 +199,6 @@ ACTION=="add", SUBSYSTEM=="tty", \
     minimumDiskFreeEvaluator = 1;
     extraConfig =
       ''
-      store_uri = auto?secret-key=/etc/nixos/secret/nixbld.m-labs.hk-1
       binary_cache_secret_key_file = /etc/nixos/secret/nixbld.m-labs.hk-1
       max_output_size = 10000000000