diff --git a/scripts/playvid.ros b/scripts/playvid.ros
index 57818e3..5416c6e 100755
--- a/scripts/playvid.ros
+++ b/scripts/playvid.ros
@@ -17,7 +17,7 @@ exec ros -Q -- $0 "$@"
                         (nth (random (length dir) (make-random-state t)) dir))))
          (basename (pathname-name vidfile)))
     (format t "playing video: ~a~%" basename)
-    (uiop:run-program (list "mpv" (file-namestring vidfile))
+    (uiop:run-program (list "mpv" (uiop:native-namestring vidfile))
                       :input :interactive
                       :error-output :interactive
                       :output :interactive)