diff --git a/imap-send.c b/imap-send.c
index e1ad1a48ce..80e0e8c051 100644
--- a/imap-send.c
+++ b/imap-send.c
@@ -161,7 +161,6 @@ static struct imap_server_conf server = {
 struct imap_store_conf {
 	struct store_conf gen;
 	struct imap_server_conf *server;
-	unsigned use_namespace:1;
 };
 
 #define NIL	(void *)0x1