diff --git a/tests/test_issue26_ints.py b/tests/test_issue26_ints.py
index b613a3f..47413a5 100644
--- a/tests/test_issue26_ints.py
+++ b/tests/test_issue26_ints.py
@@ -108,6 +108,7 @@ NOT_ARITHMETIC = {
     # sleep's fractional seconds are its meaning here (default 0.5): mam_int would refuse them
     "SKS_QUIESCENT_INTERVAL": "sleep, fractional by default (0.5) - left raw",
     "DELEGATE_JOB_ACK_S": "create_session.sh -> delegate_wait_started, which runs mam_int on it",
+    "MAM_ID_POST_DISCOVERED": "string compare (adapter fact from lib_py.agents facts)",
 }