--- a/mime.c	2018-03-09 20:24:35.737754669 +0100
+++ b/mime.c	2018-03-09 20:24:39.107748465 +0100
@@ -678,7 +678,6 @@ mime_write_tohdr_a(struct str *in, FILE
       xin.l = PTR2SIZE(cp - lastcp);
       if ((sz = a_mime__convhdra(&xin, f, colp, msh)) < 0)
          goto jleave;
-      xin.s[xin.l] = '<';
       lastcp = cp;
    } else {
       cp = lastcp;