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-rw-r--r--libc/sysdeps/linux/common/bits/errno.h4
1 files changed, 3 insertions, 1 deletions
diff --git a/libc/sysdeps/linux/common/bits/errno.h b/libc/sysdeps/linux/common/bits/errno.h
index 92227fe73..0bf6354fb 100644
--- a/libc/sysdeps/linux/common/bits/errno.h
+++ b/libc/sysdeps/linux/common/bits/errno.h
@@ -25,7 +25,9 @@
# include <linux/errno.h>
/* Linux has no ENOTSUP error code. */
-# define ENOTSUP EOPNOTSUPP
+# ifndef ENOTSUP
+# define ENOTSUP EOPNOTSUPP
+# endif
/* Older Linux versions also had no ECANCELED error code. */
# ifndef ECANCELED