diff --git a/services/web/frontend/js/features/source-editor/lezer-latex/tokens.mjs b/services/web/frontend/js/features/source-editor/lezer-latex/tokens.mjs
index 3236cab98b..30478dd7e3 100644
--- a/services/web/frontend/js/features/source-editor/lezer-latex/tokens.mjs
+++ b/services/web/frontend/js/features/source-editor/lezer-latex/tokens.mjs
@@ -720,6 +720,8 @@ const equationArrayEnvNames = new Set([
   'cases*',
   'dcases',
   'dcases*',
+  'rcases',
+  'rcases*',
   'IEEEeqnarray',
   'IEEEeqnarray*',
 ])