diff --git a/mysqltuner.pl b/mysqltuner.pl
index df3dde7..9414ee6 100755
--- a/mysqltuner.pl
+++ b/mysqltuner.pl
@@ -473,6 +473,9 @@ sub check_architecture {
 	} elsif (`uname` =~ /AIX/ && `bootinfo -K` =~ /64/) {
 		$arch = 64;
 		goodprint "Operating on 64-bit architecture\n";
+	} elsif (`uname` =~ /NetBSD|OpenBSD/ && `sysctl -b hw.machine` =~ /64/) {
+		$arch = 64;
+		goodprint "Operating on 64-bit architecture\n";
 	} elsif (`uname` =~ /FreeBSD/ && `sysctl -b hw.machine_arch` =~ /64/) {
 		$arch = 64;
 		goodprint "Operating on 64-bit architecture\n";