diff --git a/cache-utils.c b/cache-utils.c
index 2db5af2..362c98e 100644
--- a/cache-utils.c
+++ b/cache-utils.c
@@ -57,7 +57,7 @@ static void ppc_init_cacheline_sizes(void)
 }
 #endif
 
-#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
+#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__NetBSD__)
 #include <errno.h>
 #include <stdio.h>
 #include <stdlib.h>