diff --git a/panda/src/putil/CMakeLists.txt b/panda/src/putil/CMakeLists.txt
index 71a2fdc2dc..d935d59c33 100644
--- a/panda/src/putil/CMakeLists.txt
+++ b/panda/src/putil/CMakeLists.txt
@@ -133,6 +133,9 @@ set(P3PUTIL_IGATEEXT
   callbackObject_ext.h
   doubleBitMask_ext.h
   doubleBitMask_ext.I
+  paramPyObject.cxx
+  paramPyObject.h
+  paramPyObject.I
   pythonCallbackObject.cxx
   pythonCallbackObject.h
   sparseArray_ext.cxx