diff --git a/soap/index.js b/soap/index.js
index eb90a94..223b43e 100644
--- a/soap/index.js
+++ b/soap/index.js
@@ -38,7 +38,7 @@ class DepartureBoardSoap {
           let val="";
           if(key == "filterList"){
               options[key].forEach((crs) => {
-                  val += `<crs>${crs}</crs>`;
+                  val += `<ldb:crs>${crs}</ldb:crs>`;
               });
           } else {
               val = `${options[key]}`