diff --git a/src/scripts/validate-sgid-index.mjs b/src/scripts/validate-sgid-index.mjs
index 7edb988377..21d330b538 100644
--- a/src/scripts/validate-sgid-index.mjs
+++ b/src/scripts/validate-sgid-index.mjs
@@ -130,7 +130,7 @@ async function idGuid(row) {
 
 async function itemId(row) {
   const cellValue = row.get(getFieldName('itemId'));
-  const layerId = row.get(getFieldName('serverLayerId'));
+  let layerId = row.get(getFieldName('serverLayerId'));
   if (!layerId) {
     layerId = 0;
   }