diff --git a/www/plugins/es/js/services/http-services.js b/www/plugins/es/js/services/http-services.js
index 7f7569bdd0dd73d454d4f147dfabbf9ea93c1698..1a1a1f4963ef94b48d45c3966aff57fc2c91d402 100644
--- a/www/plugins/es/js/services/http-services.js
+++ b/www/plugins/es/js/services/http-services.js
@@ -16,7 +16,7 @@ angular.module('cesium.es.http.services', ['ngResource', 'ngApi', 'cesium.servic
       regexp = {
         IMAGE_SRC: exact('data:([A-Za-z//]+);base64,(.+)'),
         HASH_TAG: match('#([\\wḡĞǦğàáâãäåçèéêëìíîïðòóôõöùúûüýÿ]+)'),
-        USER_TAG: match('@('+BMA.constants.regexp.USER_ID+')'),
+        USER_TAG: match('(?:^|[\t\n\r\s ])@('+BMA.constants.regexp.USER_ID+')'),
         ES_USER_API_ENDPOINT: exact(constants.ES_USER_API_ENDPOINT)
       };