diff --git a/lib/directory.cc b/lib/directory.cc
index 461c0cc..bb6314a 100644
--- a/lib/directory.cc
+++ b/lib/directory.cc
@@ -213,7 +213,7 @@ _notmuch_directory_create (notmuch_database_t *notmuch,
 	    Xapian::docid parent_id;
 	    char *term = talloc_asprintf (local, "%s%s",
 					  _find_prefix ("directory"), db_path);
-	    directory->doc.add_term (term);
+	    directory->doc.add_term (term, 0);
 
 	    directory->doc.set_data (path);
 
@@ -225,7 +225,7 @@ _notmuch_directory_create (notmuch_database_t *notmuch,
 		term = talloc_asprintf (local, "%s%u:%s",
 					_find_prefix ("directory-direntry"),
 					parent_id, basename);
-		directory->doc.add_term (term);
+		directory->doc.add_term (term, 0);
 	    }
 
 	    directory->doc.add_value (NOTMUCH_VALUE_TIMESTAMP,
diff --git a/lib/message.cc b/lib/message.cc
index 1cda55a..f0e905b 100644
--- a/lib/message.cc
+++ b/lib/message.cc
@@ -192,7 +192,7 @@ _notmuch_message_create_for_message_id (notmuch_database_t *notmuch,
 
     db = static_cast<Xapian::WritableDatabase *> (notmuch->xapian_db);
     try {
-	doc.add_term (term);
+	doc.add_term (term, 0);
 	talloc_free (term);
 
 	doc.add_value (NOTMUCH_VALUE_MESSAGE_ID, message_id);
@@ -646,7 +646,7 @@ _notmuch_message_add_term (notmuch_message_t *message,
     if (strlen (term) > NOTMUCH_TERM_MAX)
 	return NOTMUCH_PRIVATE_STATUS_TERM_TOO_LONG;
 
-    message->doc.add_term (term);
+    message->doc.add_term (term, 0);
 
     talloc_free (term);