diff --git a/direct/src/dcparser/dcParameter.cxx b/direct/src/dcparser/dcParameter.cxx
index f30d132683..827d73d715 100644
--- a/direct/src/dcparser/dcParameter.cxx
+++ b/direct/src/dcparser/dcParameter.cxx
@@ -86,6 +86,16 @@ as_class_parameter() {
   return NULL;
 }
 
+////////////////////////////////////////////////////////////////////
+//     Function: DCParameter::as_switch_parameter
+//       Access: Published, Virtual
+//  Description: 
+////////////////////////////////////////////////////////////////////
+DCSwitchParameter *DCParameter::
+as_switch_parameter() {
+  return NULL;
+}
+
 ////////////////////////////////////////////////////////////////////
 //     Function: DCParameter::as_array_parameter
 //       Access: Published, Virtual
diff --git a/direct/src/dcparser/dcParameter.h b/direct/src/dcparser/dcParameter.h
index 645710ea59..18c165cf21 100644
--- a/direct/src/dcparser/dcParameter.h
+++ b/direct/src/dcparser/dcParameter.h
@@ -50,6 +50,7 @@ PUBLISHED:
   virtual DCParameter *as_parameter();
   virtual DCSimpleParameter *as_simple_parameter();
   virtual DCClassParameter *as_class_parameter();
+  virtual DCSwitchParameter *as_switch_parameter();
   virtual DCArrayParameter *as_array_parameter();
 
   virtual DCParameter *make_copy() const=0;