diff --git a/kbx/keybox-update.c b/kbx/keybox-update.c
index ddda52ac1..6e45f3d4d 100644
--- a/kbx/keybox-update.c
+++ b/kbx/keybox-update.c
@@ -483,17 +483,6 @@ keybox_insert_cert (KEYBOX_HANDLE hd, ksba_cert_t cert,
   return rc;
 }
 
-int
-keybox_update_cert (KEYBOX_HANDLE hd, ksba_cert_t cert,
-                    unsigned char *sha1_digest)
-{
-  (void)hd;
-  (void)cert;
-  (void)sha1_digest;
-  return -1;
-}
-
-
 #endif /*KEYBOX_WITH_X509*/
 
 /* Note: We assume that the keybox has been locked before the current
diff --git a/kbx/keybox.h b/kbx/keybox.h
index c5f9b571e..565274c10 100644
--- a/kbx/keybox.h
+++ b/kbx/keybox.h
@@ -109,8 +109,6 @@ gpg_error_t keybox_update_keyblock (KEYBOX_HANDLE hd,
 #ifdef KEYBOX_WITH_X509
 int keybox_insert_cert (KEYBOX_HANDLE hd, ksba_cert_t cert,
                         unsigned char *sha1_digest);
-int keybox_update_cert (KEYBOX_HANDLE hd, ksba_cert_t cert,
-                        unsigned char *sha1_digest);
 #endif /*KEYBOX_WITH_X509*/
 int keybox_set_flags (KEYBOX_HANDLE hd, int what, int idx, unsigned int value);
 
diff --git a/sm/keydb.c b/sm/keydb.c
index 8c0537a9f..c4803f8b7 100644
--- a/sm/keydb.c
+++ b/sm/keydb.c
@@ -778,44 +778,6 @@ keydb_insert_cert (KEYDB_HANDLE hd, ksba_cert_t cert)
 }
 
 
-
-/* Update the current keyblock with KB.  */
-int
-keydb_update_cert (KEYDB_HANDLE hd, ksba_cert_t cert)
-{
-  int rc = 0;
-  unsigned char digest[20];
-
-  if (!hd)
-    return gpg_error (GPG_ERR_INV_VALUE);
-
-  if ( hd->found < 0 || hd->found >= hd->used)
-    return -1; /* nothing found */
-
-  if (opt.dry_run)
-    return 0;
-
-  rc = lock_all (hd);
-  if (rc)
-    return rc;
-
-  gpgsm_get_fingerprint (cert, GCRY_MD_SHA1, digest, NULL); /* kludge*/
-
-  switch (hd->active[hd->found].type)
-    {
-    case KEYDB_RESOURCE_TYPE_NONE:
-      rc = gpg_error (GPG_ERR_GENERAL); /* oops */
-      break;
-    case KEYDB_RESOURCE_TYPE_KEYBOX:
-      rc = keybox_update_cert (hd->active[hd->found].u.kr, cert, digest);
-      break;
-    }
-
-  unlock_all (hd);
-  return rc;
-}
-
-
 /*
  * The current keyblock or cert will be deleted.
  */
diff --git a/sm/keydb.h b/sm/keydb.h
index 623462553..f4db5d394 100644
--- a/sm/keydb.h
+++ b/sm/keydb.h
@@ -47,7 +47,6 @@ void keydb_push_found_state (KEYDB_HANDLE hd);
 void keydb_pop_found_state (KEYDB_HANDLE hd);
 int keydb_get_cert (KEYDB_HANDLE hd, ksba_cert_t *r_cert);
 int keydb_insert_cert (KEYDB_HANDLE hd, ksba_cert_t cert);
-int keydb_update_cert (KEYDB_HANDLE hd, ksba_cert_t cert);
 
 int keydb_delete (KEYDB_HANDLE hd, int unlock);