diff --git a/code/ddns-lambda.py b/code/ddns-lambda.py
index b748a65..67c8202 100755
--- a/code/ddns-lambda.py
+++ b/code/ddns-lambda.py
@@ -3042,7 +3042,7 @@ def get_session_assume_role(account):
                          str(account), lineno())
         else:
             LOGGER.debug(f"Found existing session for account {account}: {lineno()}")
-            count['assumed_role.cached_'] += 1
+            count['assumed_role.cached'] += 1
         return this_session
     except Exception as err:
         LOGGER.error(