diff --git a/src/vnet/bfd/bfd_main.c b/src/vnet/bfd/bfd_main.c
index 34e9804..a9a6d05 100644
--- a/src/vnet/bfd/bfd_main.c
+++ b/src/vnet/bfd/bfd_main.c
@@ -1327,7 +1327,7 @@
   bm->vlib_main = vm;
   bm->vnet_main = vnet_get_main ();
   clib_memset (&bm->wheel, 0, sizeof (bm->wheel));
-  bm->cpu_cps = vm->clib_time.clocks_per_second;
+  bm->cpu_cps = (u64) vm->clib_time.clocks_per_second;
   BFD_DBG ("cps is %.2f", bm->cpu_cps);
   bm->default_desired_min_tx_clocks =
     bfd_usec_to_clocks (bm, BFD_DEFAULT_DESIRED_MIN_TX_USEC);