diff --git a/CHANGES.rst b/CHANGES.rst
index 0e3cff47..1c3d5a49 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -1,3 +1,8 @@
+v23.8.1
+-------
+
+* #587: Fix regression in ``libsecret``.
+
 v23.8.0
 -------
 
diff --git a/keyring/backend.py b/keyring/backend.py
index 05b5d5ab..731b5073 100644
--- a/keyring/backend.py
+++ b/keyring/backend.py
@@ -250,7 +250,7 @@ def _query(self, service, username=None, **base):
                 scheme['username']: username,
                 scheme['service']: service,
             }
-            if username
+            if username is not None
             else {
                 scheme['service']: service,
             },