1 files changed, 1 insertions, 1 deletions

diff --git a/mailutils/sendmail.c b/mailutils/sendmail.c
index 8ddb7826b..b542099fd 100644
--- a/mailutils/sendmail.c
+++ b/mailutils/sendmail.c
@@ -150,7 +150,7 @@ static char *sane_address(char *str)
         trim(str);
         s = str;
         while (*s) {
-                if (!isalnum(*s) && !strchr("_-.@", *s)) {
+                if (!isalnum(*s) && !strchr("+_-.@", *s)) {
                         bb_error_msg("bad address '%s'", str);
                         /* returning "": */
                         str[0] = '\0';