diff --git a/benchmark/gcbench/vdparser.extra/vdc/lexer.d b/benchmark/gcbench/vdparser.extra/vdc/lexer.d
index a01c49e719..3896a96377 100644
--- a/benchmark/gcbench/vdparser.extra/vdc/lexer.d
+++ b/benchmark/gcbench/vdparser.extra/vdc/lexer.d
@@ -1026,6 +1026,7 @@ const string[] keywords =
     "__LINE__",
     "__FUNCTION__",
     "__PRETTY_FUNCTION__",
+    "__MANGLED_FUNCTION__",
     "__MODULE__",
 
     "shared",
diff --git a/benchmark/gcbench/vdparser.extra/vdc/parser/expr.d b/benchmark/gcbench/vdparser.extra/vdc/parser/expr.d
index 47c03d77b9..21e987ef59 100644
--- a/benchmark/gcbench/vdparser.extra/vdc/parser/expr.d
+++ b/benchmark/gcbench/vdparser.extra/vdc/parser/expr.d
@@ -870,6 +870,7 @@ class PrimaryExpression : Expression
             case TOK___LINE__:
             case TOK___FUNCTION__:
             case TOK___PRETTY_FUNCTION__:
+            case TOK___MANGLED_FUNCTION__:
             case TOK___MODULE__:
                 auto expr = new ast.PrimaryExpression(p.tok);
                 p.pushNode(expr);