diff --git a/opendkim/opendkim.c b/opendkim/opendkim.c
index 803f37b0..c9dd782d 100644
--- a/opendkim/opendkim.c
+++ b/opendkim/opendkim.c
@@ -10766,7 +10766,7 @@ dkimf_ar_all_sigs(char *hdr, size_t hdrlen, struct dkimf_dstring *tmpstr,
" (%u-bit key%s%s)",
keybits,
dnssec == NULL ? ""
- : "; ",
+ : ", ",
dnssec == NULL ? ""
: dnssec);
}