diff --git a/ops/nixos/lib/erbium.nix b/ops/nixos/lib/erbium.nix
index fc18f752e3..f0c5941d05 100644
--- a/ops/nixos/lib/erbium.nix
+++ b/ops/nixos/lib/erbium.nix
@@ -38,7 +38,7 @@ in
       restartTriggers = [ configFile ];
 
       serviceConfig = {
-        ExecStart = "${cfg.package} /etc/erbium.conf";
+        ExecStart = "${cfg.package}/bin/erbium /etc/erbium.conf";
         Type = "simple";
         Restart = "always";
         DynamicUser = true;