- if (strcasestr (notmuch_message_get_header (message, "to"), addr) == 0 ||
- strcasestr (notmuch_message_get_header (message, "cc"), addr) == 0)
+ if (strcasestr (notmuch_message_get_header (message, "to"), addr) != 0 ||
+ strcasestr (notmuch_message_get_header (message, "cc"), addr) != 0)