diff --git a/src/ast/ast-value-factory.h b/src/ast/ast-value-factory.h
index 3d8d0af348..a46d61be3d 100644
--- a/src/ast/ast-value-factory.h
+++ b/src/ast/ast-value-factory.h
@@ -429,7 +429,6 @@ class AstValueFactory {
   const AstValue* NewSmi(uint32_t number);
   V8_EXPORT_PRIVATE const AstValue* NewBigInt(const char* number);
   const AstValue* NewBoolean(bool b);
-  const AstValue* NewStringList(ZoneList<const AstRawString*>* strings);
   const AstValue* NewNull();
   const AstValue* NewUndefined();
   const AstValue* NewTheHole();