diff --git a/scripts/mbedtls_dev/macro_collector.py b/scripts/mbedtls_dev/macro_collector.py
index 395e038..bc432be 100644
--- a/scripts/mbedtls_dev/macro_collector.py
+++ b/scripts/mbedtls_dev/macro_collector.py
@@ -367,6 +367,7 @@
             'asymmetric_encryption_algorithm': [],
             'pake_algorithm': [self.pake_algorithms],
             'other_algorithm': [],
+            'lifetime': [],
         } #type: Dict[str, List[Set[str]]]
         self.arguments_for['mac_length'] += ['1', '63']
         self.arguments_for['min_mac_length'] += ['1', '63']