diff --git a/src/vppinfra/bihash_template.c b/src/vppinfra/bihash_template.c
index 47e9bd0..2305436 100644
--- a/src/vppinfra/bihash_template.c
+++ b/src/vppinfra/bihash_template.c
@@ -38,7 +38,7 @@
       void *base, *rv;
       uword alloc = alloc_arena_next (h) - alloc_arena_mapped (h);
       int mmap_flags = MAP_FIXED | MAP_PRIVATE | MAP_ANONYMOUS;
-      int mmap_flags_huge = (mmap_flags | MAP_HUGETLB |
+      int mmap_flags_huge = (mmap_flags | MAP_HUGETLB | MAP_LOCKED |
 			     BIHASH_LOG2_HUGEPAGE_SIZE << MAP_HUGE_SHIFT);
 
       /* new allocation is 25% of existing one */