1 files changed, 1 insertions, 1 deletions

diff --git a/src/fs/fs_publish_ublock.c b/src/fs/fs_publish_ublock.c
index 71997fda0..75446e8a8 100644
--- a/src/fs/fs_publish_ublock.c
+++ b/src/fs/fs_publish_ublock.c
@@ -242,7 +242,7 @@ GNUNET_FS_publish_ublock_ (struct GNUNET_FS_Handle *h,
   ub_enc->purpose.purpose = htonl (GNUNET_SIGNATURE_PURPOSE_FS_UBLOCK);
 
   /* derive signing-key from 'label' and public key of the namespace */
-  nsd = GNUNET_CRYPTO_ecc_key_derive (ns, label);
+  nsd = GNUNET_CRYPTO_ecc_key_derive (ns, label, "fs-ublock");
   GNUNET_CRYPTO_ecc_key_get_public (nsd,
                                     &ub_enc->verification_key);
   GNUNET_assert (GNUNET_OK ==