diff --git a/tests/playTests.sh b/tests/playTests.sh
index ec1692c2..b99fd80f 100755
--- a/tests/playTests.sh
+++ b/tests/playTests.sh
@@ -121,7 +121,7 @@ esac
 
 MTIME="stat -c %Y"
 case "$UNAME" in
-    Darwin | FreeBSD | OpenBSD) MTIME="stat -f %m" ;;
+    Darwin | FreeBSD | OpenBSD | NetBSD) MTIME="stat -f %m" ;;
 esac
 
 DIFF="diff"