diff --git a/doc/langref.html.in b/doc/langref.html.in
index 55d3acc59..fca0a342a 100644
--- a/doc/langref.html.in
+++ b/doc/langref.html.in
@@ -5733,7 +5733,7 @@ VariableDeclaration = ("var" | "const") Symbol option(":" TypeExpr) option("alig
 
 ContainerMember = (ContainerField | FnDef | GlobalVarDecl)
 
-ContainerField = Symbol option(":" PrefixOpExpression option("=" PrefixOpExpression ","
+ContainerField = Symbol option(":" PrefixOpExpression option("=" PrefixOpExpression)) ","
 
 UseDecl = "use" Expression ";"
 
@@ -5833,7 +5833,7 @@ BinaryAndExpression = BitShiftExpression "&" BinaryAndExpression | BitShiftE
 
 BitShiftExpression = AdditionExpression BitShiftOperator BitShiftExpression | AdditionExpression
 
-BitShiftOperator = "<<" | ">>" | "<<"
+BitShiftOperator = "<<" | ">>"
 
 AdditionExpression = MultiplyExpression AdditionOperator AdditionExpression | MultiplyExpression