diff --git a/script/start.sh b/script/start.sh
index 7192457..5b58556 100644
--- a/script/start.sh
+++ b/script/start.sh
@@ -142,7 +142,7 @@ parse_json() {
 
     # Registration token (can also be set via environment variable)
     local json_token=$(echo "$json" | jq -r '.registration_token // empty')
-    [[ -n "$json_token" ]] && SYSADMIN_REGISTRATION_TOKEN="$json_token"
+    [[ -n "$json_token" ]] && SYSADMIN_REGISTRATION_TOKEN="$json_token" || true
 }
 
 # =============================================================================