diff --git a/exec.c b/exec.c
index 5bc920313af1395b751528f0586cfe1372fca87f..719fff9a915f07d0ff2f7c313bceacb6a16332ab 100644
--- a/exec.c
+++ b/exec.c
@@ -526,7 +526,8 @@ static void code_gen_alloc(unsigned long tb_size)
         }
     }
 #elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__) \
-    || defined(__DragonFly__) || defined(__OpenBSD__)
+    || defined(__DragonFly__) || defined(__OpenBSD__) \
+    || defined(__NetBSD__)
     {
         int flags;
         void *addr = NULL;