1 files changed, 3 insertions, 0 deletions
diff --git a/src/keymap.c b/src/keymap.c
index 11a48e2c235..2be4b81d841 100644
--- a/src/keymap.c
+++ b/src/keymap.c
@@ -1139,6 +1139,9 @@ push_key_description (c, p)
      register unsigned int c;
      register char *p;
 {
+  /* Clear all the meaningless bits above the meta bit.  */
+  c &= meta_modifier | ~ - meta_modifier;
+
   if (c & alt_modifier)
     {
       *p++ = 'A';