diff --git a/ncat/ncat_listen.c b/ncat/ncat_listen.c
index 4a3a7a2ce..34c3bb8dc 100644
--- a/ncat/ncat_listen.c
+++ b/ncat/ncat_listen.c
@@ -274,7 +274,8 @@ static int ncat_listen_stream(int proto)
         /* setup the main listening socket */
         listen_socket[num_sockets] = do_listen(SOCK_STREAM, proto, &listenaddrs[i]);
         if (listen_socket[num_sockets] == -1) {
-            logdebug("do_listen(\"%s\"): %s\n", inet_ntop_ez(&listenaddrs[i].storage, sizeof(listenaddrs[i].storage)), socket_strerror(socket_errno()));
+            if (o.debug > 0)
+                logdebug("do_listen(\"%s\"): %s\n", inet_ntop_ez(&listenaddrs[i].storage, sizeof(listenaddrs[i].storage)), socket_strerror(socket_errno()));
             continue;
         }
 
@@ -681,7 +682,8 @@ static int ncat_listen_dgram(int proto)
         /* create the UDP listen sockets */
         sockfd[num_sockets].fd = do_listen(SOCK_DGRAM, proto, &listenaddrs[i]);
         if (sockfd[num_sockets].fd == -1) {
-            logdebug("do_listen(\"%s\"): %s\n", inet_ntop_ez(&listenaddrs[i].storage, sizeof(listenaddrs[i].storage)), socket_strerror(socket_errno()));
+            if (o.debug > 0)
+                logdebug("do_listen(\"%s\"): %s\n", inet_ntop_ez(&listenaddrs[i].storage, sizeof(listenaddrs[i].storage)), socket_strerror(socket_errno()));
             continue;
         }
         FD_SET(sockfd[num_sockets].fd, &listen_fds);
diff --git a/ncat/ncat_main.c b/ncat/ncat_main.c
index 949fed0ad..ea22a6ff6 100644
--- a/ncat/ncat_main.c
+++ b/ncat/ncat_main.c
@@ -939,7 +939,7 @@ static int ncat_listen_mode(void)
             rc = resolve("::", o.portno, &listenaddrs[num_listenaddrs].storage, &ss_len, AF_INET6);
             if (rc == 0)
                 num_listenaddrs++;
-            else
+            else if (o.debug > 0)
                 logdebug("Failed to resolve default IPv6 address: %s\n", gai_strerror(rc));
         }
 #endif
diff --git a/ncat/ncat_proxy.c b/ncat/ncat_proxy.c
index 8757e5244..9b2701390 100644
--- a/ncat/ncat_proxy.c
+++ b/ncat/ncat_proxy.c
@@ -221,7 +221,8 @@ int ncat_http_server(void)
     for (i = 0; i < num_listenaddrs; i++) {
         listen_socket[num_sockets] = do_listen(SOCK_STREAM, IPPROTO_TCP, &listenaddrs[i]);
         if (listen_socket[num_sockets] == -1) {
-            logdebug("do_listen(\"%s\"): %s\n", inet_ntop_ez(&listenaddrs[i].storage, sizeof(listenaddrs[i].storage)), socket_strerror(socket_errno()));
+            if (o.debug > 0)
+                logdebug("do_listen(\"%s\"): %s\n", inet_ntop_ez(&listenaddrs[i].storage, sizeof(listenaddrs[i].storage)), socket_strerror(socket_errno()));
             continue;
         }