diff --git a/js/apps/system/_admin/aardvark/APP/frontend/src/mode-aql.js b/js/apps/system/_admin/aardvark/APP/frontend/src/mode-aql.js
index 3e43efedd2..8cb624218d 100644
--- a/js/apps/system/_admin/aardvark/APP/frontend/src/mode-aql.js
+++ b/js/apps/system/_admin/aardvark/APP/frontend/src/mode-aql.js
@@ -106,7 +106,7 @@ var AqlHighlightRules = function() {
         "date_minute|date_second|date_millisecond|date_dayofyear|date_isoweek|date_leapyear|date_quarter|date_days_in_month|" + 
         "date_add|date_subtract|date_diff|date_compare|date_format|fail|passthru|sleep|not_null|" +
         "first_list|first_document|parse_identifier|current_user|current_database|" +
-        "collections|document|union|union_distinct|intersection|flatten|" +
+        "collections|document|union|union_distinct|intersection|flatten|is_same_collection|" +
         "ltrim|rtrim|find_first|find_last|split|substitute|md5|sha1|random_token|AQL_LAST_ENTRY)"
     );