diff --git a/projects/ucap-webmessenger-ui/src/lib/utils/string.util.ts b/projects/ucap-webmessenger-ui/src/lib/utils/string.util.ts
index 169e6e93..7d7dcbbd 100644
--- a/projects/ucap-webmessenger-ui/src/lib/utils/string.util.ts
+++ b/projects/ucap-webmessenger-ui/src/lib/utils/string.util.ts
@@ -246,6 +246,7 @@ export class StringUtil {
           '<': '&lt;',
           '>': '&gt;',
           '"': '&quot;',
+          // tslint:disable-next-line: quotemark
           "'": '&#39;'
         }[m])
     );