diff --git a/scripts/generate_psa_constants.py b/scripts/generate_psa_constants.py
index 4f8b87b..01c5a32 100755
--- a/scripts/generate_psa_constants.py
+++ b/scripts/generate_psa_constants.py
@@ -213,6 +213,9 @@
     2. Call `write_file` to write ``psa_constant_names_generated.c``.
     """
 
+    def __init__(self):
+        super().__init__(include_intermediate=True)
+
     @staticmethod
     def _make_return_case(name):
         return 'case %(name)s: return "%(name)s";' % {'name': name}