diff --git a/keyserver/internal/internal.go b/keyserver/internal/internal.go
index 4466b635..90b0f949 100644
--- a/keyserver/internal/internal.go
+++ b/keyserver/internal/internal.go
@@ -429,6 +429,7 @@ func (a *KeyInternalAPI) crossSigningKeys(
 	for userID := range req.UserToDevices {
 		keys, err := a.DB.CrossSigningKeysForUser(ctx, userID)
 		if err != nil {
+			logrus.WithError(err).Errorf("Failed to get cross-signing keys for user %q", userID)
 			return fmt.Errorf("a.DB.CrossSigningKeysForUser (%q): %w", userID, err)
 		}
 
@@ -444,6 +445,8 @@ func (a *KeyInternalAPI) crossSigningKeys(
 					},
 				}
 
+				logrus.WithField("key", key).Info("Cross-signing key")
+
 				// TODO: populate signatures
 
 				switch keyType {