diff --git a/src/dns.c b/src/dns.c
index a118598f9..cb0a9a95d 100644
--- a/src/dns.c
+++ b/src/dns.c
@@ -1004,7 +1004,7 @@ int dns_init_resolvers(int close_socket)
 
 			if (close_socket == 1) {
 				if (curnameserver->dgram) {
-					close(curnameserver->dgram->t.sock.fd);
+					fd_delete(curnameserver->dgram->t.sock.fd);
 					memset(curnameserver->dgram, '\0', sizeof(*dgram));
 					dgram = curnameserver->dgram;
 				}