diff --git a/x-pack/plugins/security_solution/cypress/screens/timeline.ts b/x-pack/plugins/security_solution/cypress/screens/timeline.ts
index d6dfd9a986b47..4972cba937584 100644
--- a/x-pack/plugins/security_solution/cypress/screens/timeline.ts
+++ b/x-pack/plugins/security_solution/cypress/screens/timeline.ts
@@ -105,6 +105,7 @@ export const TIMELINE_FIELDS_BUTTON =
   '[data-test-subj="timeline"] [data-test-subj="show-field-browser"]';
 
 export const TIMELINE_FILTER = (filter: TimelineFilter) => {
+  // The space at the end of the line is required. We want to keep it until it is updated.
   return `[data-test-subj="filter filter-enabled filter-key-${filter.field} filter-value-${filter.value} filter-unpinned "]`;
 };