diff --git a/src/lease.c b/src/lease.c
index 5f91bc8..7982476 100644
--- a/src/lease.c
+++ b/src/lease.c
@@ -582,7 +582,7 @@
 	continue;
       
       /* leases on the wrong interface get filtered out here */
-      if (!address6_available(context, (struct in6_addr *)&lease->hwaddr, NULL))
+      if (!is_addr_in_context6(context, (struct in6_addr *)&lease->hwaddr))
 	lease->flags |= LEASE_USED;
     }
 }