1 files changed, 0 insertions, 1 deletions
diff --git a/mjit.c b/mjit.c
index 6d91afbaae..0b2bb98041 100644
--- a/mjit.c
+++ b/mjit.c
@@ -449,7 +449,6 @@ static void
 clean_so_file(struct rb_mjit_unit *unit)
 {
 #ifdef _WIN32
-# undef Sleep
     char *so_file = unit->so_file;
     if (so_file) {
         unit->so_file = NULL;