1 files changed, 1 insertions, 0 deletions
diff --git a/missing/close.c b/missing/close.c
index e836bf4906..8dc6928ffd 100644
--- a/missing/close.c
+++ b/missing/close.c
@@ -57,6 +57,7 @@ ruby_close(int s)
 {
     int err = errno;
     errno = 0;
+#undef close
     s = close(s);
     if (errno == ECONNRESET) {
 	errno = 0;