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-rw-r--r--lib/database.cc2
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/database.cc b/lib/database.cc
index 726c5a98..294247e2 100644
--- a/lib/database.cc
+++ b/lib/database.cc
@@ -908,7 +908,7 @@ notmuch_database_add_message (notmuch_database_t *notmuch,
* is to find a message ID (or else create one ourselves). */
header = notmuch_message_file_get_header (message_file, "message-id");
- if (header) {
+ if (header && *header != '\0') {
message_id = _parse_message_id (message_file, header, NULL);
/* So the header value isn't RFC-compliant, but it's
* better than no message-id at all. */