diff --git a/src/python/m5/params.py b/src/python/m5/params.py
index 6033096faa..3593f95bbc 100644
--- a/src/python/m5/params.py
+++ b/src/python/m5/params.py
@@ -1433,7 +1433,8 @@ module_init(py::module &m_internal)
         for val in cls.vals:
             code('.value("${val}", ${wrapper_name}::${val})')
         code('.value("Num_${name}", ${wrapper_name}::Num_${enum_name})')
-        code('.export_values()')
+        if not cls.is_class:
+            code('.export_values()')
         code(';')
         code.dedent()