diff --git a/containers/mautrix-facebook.nix b/containers/mautrix-facebook.nix
index c10ee37..9aed8af 100644
--- a/containers/mautrix-facebook.nix
+++ b/containers/mautrix-facebook.nix
@@ -21,12 +21,17 @@ nglib.makeSystem {
             ''
               DATA_DIR="/var/lib/mautrix-facebook"
               CONFIG_FILE="$DATA_DIR/config.yaml"
+              REGISTRATION_FILE="$DATA_DIR/registration.yaml"
               DB_FILE="$DATA_DIR/sqlite.db"
+
               cp ${config} "$CONFIG_FILE" ; chmod 755 "$CONFIG_FILE"
               ${pkgs.sqlite}/bin/sqlite3 $DB_FILE '.databases ; .quit'
-              [ -e -r $NOMAD_ALLOC_DIR/registration.yaml ] || \
-                ${pkgs.mautrix-facebook}/bin/mautrix-facebook -c "$CONFIG_FILE" -r $NOMAD_ALLOC_DIR/registration.yaml -g
-              ${pkgs.mautrix-facebook}/bin/mautrix-facebook -c "$CONFIG_FILE" -r $NOMAD_ALLOC_DIR/registration.yaml -n
+
+              [ -e "$REGISTRATION_FILE" ] || \
+                ${pkgs.mautrix-facebook}/bin/mautrix-facebook -c "$CONFIG_FILE" -r "$REGISTRATION_FILE" -g
+              cp "$REGISTRATION_FILE" $NOMAD_TASK_DIR/registration.yaml
+
+              ${pkgs.mautrix-facebook}/bin/mautrix-facebook -c "$CONFIG_FILE" -r "$REGISTRATION_FILE" -n
             '';
       };
     });