diff --git a/player/command.c b/player/command.c
index 01988a8251..7df0c8a6c3 100644
--- a/player/command.c
+++ b/player/command.c
@@ -3668,6 +3668,8 @@ static void replace_overlay(struct MPContext *mpctx, int id, struct overlay *new
     // Do this afterwards, so we never unmap while the OSD is using it.
     if (old.osd.bitmap && old.map_size)
         munmap(old.osd.bitmap, old.map_size);
+#else
+    (void)old;
 #endif
 }