diff --git a/src/_zkapauthorizer/tests/test_model.py b/src/_zkapauthorizer/tests/test_model.py
index e2c2c0a69de9cddbf32a0f4e5c37d1f67202da6a..93c91886909c44d4c4c73756d62baf3007775eb3 100644
--- a/src/_zkapauthorizer/tests/test_model.py
+++ b/src/_zkapauthorizer/tests/test_model.py
@@ -465,7 +465,7 @@ class UnblindedTokenStateMachine(RuleBasedStateMachine):
     def get_passes(self, num_passes):
         """
         Some passes can be requested from the store.  The resulting passes are not
-        in use, spent, or invalid.
+        spent, invalid, or already in-use.
         """
         assume(num_passes <= self.available)
         tokens = self.configless.store.get_unblinded_tokens(num_passes)