diff --git a/x-pack/legacy/plugins/rollup/server/routes/api/index_patterns.js b/x-pack/legacy/plugins/rollup/server/routes/api/index_patterns.js
index 04c313f9b3ba1..ea72606244870 100644
--- a/x-pack/legacy/plugins/rollup/server/routes/api/index_patterns.js
+++ b/x-pack/legacy/plugins/rollup/server/routes/api/index_patterns.js
@@ -43,8 +43,9 @@ export function registerFieldsForWildcardRoute(server) {
       } = request.query;
 
       // Format call to standard index pattern `fields for wildcard`
+      const standardRequestQuery = querystring.stringify({ pattern, meta_fields: metaFields });
       const standardRequest = {
-        url: `/api/index_patterns/_fields_for_wildcard?${querystring.stringify({ pattern, meta_fields: metaFields })}`,
+        url: `${request.getBasePath()}/api/index_patterns/_fields_for_wildcard?${standardRequestQuery}`,
         method: 'GET',
         headers: request.headers,
       };