diff --git a/pimd/pim_neighbor.c b/pimd/pim_neighbor.c
index 9013b50..0df7422 100644
--- a/pimd/pim_neighbor.c
+++ b/pimd/pim_neighbor.c
@@ -292,7 +292,7 @@
 
   neigh = XMALLOC(MTYPE_PIM_NEIGHBOR, sizeof(*neigh));
   if (!neigh) {
-    zlog_err("%s: PIM XMALLOC(%d) failure",
+    zlog_err("%s: PIM XMALLOC(%zu) failure",
 	     __PRETTY_FUNCTION__, sizeof(*neigh));
     return 0;
   }