1 files changed, 3 insertions, 0 deletions

diff --git a/lisp/international/mule-conf.el b/lisp/international/mule-conf.el
index 05ab584f511..736ced7c85c 100644
--- a/lisp/international/mule-conf.el
+++ b/lisp/international/mule-conf.el
@@ -461,6 +461,9 @@ for decoding and encoding files, process I/O, etc."
    nil ascii-eol ascii-cntl nil nil nil nil nil nil nil nil t)
  '((safe-charsets ascii)))
 
+(define-coding-system-alias
+  'us-ascii 'iso-safe)
+
 ;; Use iso-safe for terminal output if some other coding system is not
 ;; specified explicitly.
 (set-safe-terminal-coding-system-internal 'iso-safe)