diff --git a/src/crypto/slow-hash.c b/src/crypto/slow-hash.c
index 4d159472..3aff7bd5 100644
--- a/src/crypto/slow-hash.c
+++ b/src/crypto/slow-hash.c
@@ -330,7 +330,7 @@ void slow_hash_allocate_state(void)
     hp_state = (uint8_t *) VirtualAlloc(hp_state, MEMORY, MEM_LARGE_PAGES |
                                         MEM_COMMIT | MEM_RESERVE, PAGE_READWRITE);
 #else
-#if defined(__APPLE__)
+#if defined(__APPLE__) || defined(__FreeBSD__)
     hp_state = mmap(0, MEMORY, PROT_READ | PROT_WRITE,
                     MAP_PRIVATE | MAP_ANON, 0, 0);    
 #else