diff --git a/panda/src/recorder/mouseRecorder.cxx b/panda/src/recorder/mouseRecorder.cxx
index 37a5a2a440..a851d26125 100644
--- a/panda/src/recorder/mouseRecorder.cxx
+++ b/panda/src/recorder/mouseRecorder.cxx
@@ -228,11 +228,9 @@ make_from_bam(const FactoryParams &params) {
 RecorderBase *MouseRecorder::
 make_recorder(const FactoryParams &params) {
   MouseRecorder *node = new MouseRecorder("");
-  DatagramIterator scan;
-  BamReader *manager;
+  BamReaderParam *param = DCAST(BamReaderParam, params.get_param(0));
 
-  parse_params(params, scan, manager);
-  node->fillin_recorder(scan, manager);
+  node->fillin_recorder((DatagramIterator &)param->get_iterator(), param->get_manager());
 
   return node;
 }
diff --git a/panda/src/recorder/socketStreamRecorder.cxx b/panda/src/recorder/socketStreamRecorder.cxx
index 8418485b20..6499805e4d 100644
--- a/panda/src/recorder/socketStreamRecorder.cxx
+++ b/panda/src/recorder/socketStreamRecorder.cxx
@@ -113,11 +113,9 @@ write_recorder(BamWriter *manager, Datagram &dg) {
 RecorderBase *SocketStreamRecorder::
 make_recorder(const FactoryParams &params) {
   SocketStreamRecorder *node = new SocketStreamRecorder;
-  DatagramIterator scan;
-  BamReader *manager;
+  BamReaderParam *param = DCAST(BamReaderParam, params.get_param(0));
 
-  parse_params(params, scan, manager);
-  node->fillin_recorder(scan, manager);
+  node->fillin_recorder((DatagramIterator &)param->get_iterator(), param->get_manager());
 
   return node;
 }