diff --git a/data/mntner/SPREITZER-MNT b/data/mntner/SPREITZER-MNT
index 589e2e7d4..44a8e1f0c 100644
--- a/data/mntner/SPREITZER-MNT
+++ b/data/mntner/SPREITZER-MNT
@@ -4,3 +4,4 @@ admin-c:            SPREITZER-DN42
 tech-c:             SPREITZER-DN42
 mnt-by:             SPREITZER-MNT
 source:             DN42
+auth:               pgp-fingerprint BBB7412E285684255600448768D66FF5DDAC361F