diff --git a/src/doc/grammar.md b/src/doc/grammar.md
index 3aa89cba0314a..68c2924901010 100644
--- a/src/doc/grammar.md
+++ b/src/doc/grammar.md
@@ -688,7 +688,6 @@ match_pat : pat [ '|' pat ] * [ "if" expr ] ? ;
 ```antlr
 if_let_expr : "if" "let" pat '=' expr '{' block '}'
                else_tail ? ;
-else_tail : "else" [ if_expr | if_let_expr | '{' block '}' ] ;
 ```
 
 ### While let loops