diff --git a/features/steps/core.py b/features/steps/core.py
index 273e20b8..307384f3 100644
--- a/features/steps/core.py
+++ b/features/steps/core.py
@@ -42,7 +42,7 @@ class TestKeyring(keyring.backend.KeyringBackend):
 
 
 class NoKeyring(keyring.backend.KeyringBackend):
-    """A keyring that simulated an environment with no keyring backend."
+    """A keyring that simulated an environment with no keyring backend."""
 
     priority = 2
     keys = defaultdict(dict)