diff --git a/src/parser/parser.yy b/src/parser/parser.yy
index b3232ee6c72..b2c096517c1 100644
--- a/src/parser/parser.yy
+++ b/src/parser/parser.yy
@@ -405,18 +405,18 @@ static constexpr size_t kCommentLengthLimit = 256;
 %type <boolval> opt_with_properties
 %type <boolval> opt_ignore_existed_index
 
-/* Define precedence and associativity of tokens.
- * Associativity:
- * The associativity of an operator op determines how repeated uses of the operator nest:
- * whether ‘x op y op z’ is parsed by grouping x with y first or by grouping y with z first.
- * %left specifies left-associativity (grouping x with y first) and %right specifies right-associativity (grouping y with z first).
- * %nonassoc specifies no associativity, which means that ‘x op y op z’ is considered a syntax error.
- *
- * Precedence:
- * The precedence of an operator determines how it nests with other operators.
- * All the tokens declared in a single precedence declaration have equal precedence and nest together according to their associativity.
- * When two tokens declared in different precedence declarations associate, the one declared later has the higher precedence and is grouped first.
- */
+// Define precedence and associativity of tokens.
+// Associativity:
+// The associativity of an operator op determines how repeated uses of the operator nest:
+// whether ‘x op y op z’ is parsed by grouping x with y first or by grouping y with z first.
+// %left specifies left-associativity (grouping x with y first) and %right specifies right-associativity (grouping y with z first).
+// %nonassoc specifies no associativity, which means that ‘x op y op z’ is considered a syntax error.
+//
+// Precedence:
+// The precedence of an operator determines how it nests with other operators.
+// All the tokens declared in a single precedence declaration have equal precedence and nest together according to their associativity.
+// When two tokens declared in different precedence declarations associate, the one declared later has the higher precedence and is grouped first.
+
 %left QM COLON
 %left KW_OR KW_XOR
 %left KW_AND
diff --git a/src/parser/scanner.lex b/src/parser/scanner.lex
index 7817f906469..ecdeb88b19a 100644
--- a/src/parser/scanner.lex
+++ b/src/parser/scanner.lex
@@ -29,6 +29,7 @@ static constexpr size_t MAX_STRING = 4096;
  * <LB_STR> accent quoted label, eg. `v2`
  * <COMMENT> comment
  */
+
 %x DQ_STR
 %x SQ_STR
 %x LB_STR