diff --git a/include/cef_string_visitor.h b/include/cef_string_visitor.h
index 79c9b1cbc..549371473 100644
--- a/include/cef_string_visitor.h
+++ b/include/cef_string_visitor.h
@@ -48,7 +48,7 @@ class CefStringVisitor : public virtual CefBase {
   ///
   // Method that will be executed.
   ///
-  /*--cef()--*/
+  /*--cef(optional_param=string)--*/
   virtual void Visit(const CefString& string) =0;
 };
 
diff --git a/libcef_dll/cpptoc/string_visitor_cpptoc.cc b/libcef_dll/cpptoc/string_visitor_cpptoc.cc
index 9e633f5c5..f021e2681 100644
--- a/libcef_dll/cpptoc/string_visitor_cpptoc.cc
+++ b/libcef_dll/cpptoc/string_visitor_cpptoc.cc
@@ -22,10 +22,7 @@ void CEF_CALLBACK string_visitor_visit(struct _cef_string_visitor_t* self,
   DCHECK(self);
   if (!self)
     return;
-  // Verify param: string; type: string_byref_const
-  DCHECK(string);
-  if (!string)
-    return;
+  // Unverified params: string
 
   // Execute
   CefStringVisitorCppToC::Get(self)->Visit(
diff --git a/libcef_dll/ctocpp/string_visitor_ctocpp.cc b/libcef_dll/ctocpp/string_visitor_ctocpp.cc
index b4d754e44..528f0fcdd 100644
--- a/libcef_dll/ctocpp/string_visitor_ctocpp.cc
+++ b/libcef_dll/ctocpp/string_visitor_ctocpp.cc
@@ -21,10 +21,7 @@ void CefStringVisitorCToCpp::Visit(const CefString& string) {
 
   // AUTO-GENERATED CONTENT - DELETE THIS COMMENT BEFORE MODIFYING
 
-  // Verify param: string; type: string_byref_const
-  DCHECK(!string.empty());
-  if (string.empty())
-    return;
+  // Unverified params: string
 
   // Execute
   struct_->visit(struct_,