diff --git a/dtool/src/dtoolutil/filename_ext.cxx b/dtool/src/dtoolutil/filename_ext.cxx
index 12b85111d0..4a040708b1 100644
--- a/dtool/src/dtoolutil/filename_ext.cxx
+++ b/dtool/src/dtoolutil/filename_ext.cxx
@@ -67,7 +67,7 @@ __init__(PyObject *path) {
     return;
   }
 
-  PyObject *path_str = PyObject_CallFunctionObjArgs(fspath, path, nullptr);
+  PyObject *path_str = PyObject_CallOneArg(fspath, path);
   Py_DECREF(fspath);
   if (path_str == nullptr) {
     return;
diff --git a/panda/src/event/pythonTask.cxx b/panda/src/event/pythonTask.cxx
index 57c3bd88cc..bc540a75ac 100644
--- a/panda/src/event/pythonTask.cxx
+++ b/panda/src/event/pythonTask.cxx
@@ -652,7 +652,7 @@ do_python_task() {
       PyObject *func = PyObject_GetAttrString(_generator, "throw");
       if (func != nullptr) {
         PyObject *exc = PyObject_CallNoArgs(exc_type);
-        result = PyObject_CallFunctionObjArgs(func, exc, nullptr);
+        result = PyObject_CallOneArg(func, exc);
         Py_DECREF(exc);
         Py_DECREF(func);
       } else {