diff --git a/miniupnpd/miniupnpd.c b/miniupnpd/miniupnpd.c
index 8a84198..28fc67c 100644
--- a/miniupnpd/miniupnpd.c
+++ b/miniupnpd/miniupnpd.c
@@ -154,7 +154,7 @@ tomato_save(const char *fname)
 			fclose(f);
 			rename(tmp, fname);
 		}
-		else 
+		else
 		{
 			close(t);
 		}
@@ -261,7 +261,7 @@ static void
 tomato_helper(void)
 {
 	struct stat st;
-	
+
 	if (stat("/etc/upnp/delete", &st) == 0)
 	{
 		tomato_delete();
@@ -1606,7 +1606,7 @@ init(int argc, char * * argv, struct runtime_vars * v)
 		syslog(LOG_ERR, "MiniUPnPd is already running. EXITING");
 		return 1;
 	}
-	
+
 #ifdef TOMATO
 	syslog(LOG_NOTICE, "version " MINIUPNPD_VERSION " started");
 #endif /* TOMATO */
@@ -1892,7 +1892,7 @@ main(int argc, char * * argv)
 			shttpl_v4 =  OpenAndConfHTTPSocket(&listen_port, 0);
 			if(shttpl_v4 < 0)
 			{
-				syslog(LOG_ERR, "Failed to open socket for HTTP on port %hu (IPv4). EXITING", v.port);
+				syslog(LOG_ERR, "Failed to open socket for HTTP on port %d (IPv4). EXITING", v.port);
 				return 1;
 			}
 		}
@@ -1916,7 +1916,7 @@ main(int argc, char * * argv)
 		shttpsl_v4 =  OpenAndConfHTTPSocket(&listen_port, 0);
 		if(shttpsl_v4 < 0)
 		{
-			syslog(LOG_ERR, "Failed to open socket for HTTPS on port %hu (IPv4). EXITING", v.https_port);
+			syslog(LOG_ERR, "Failed to open socket for HTTPS on port %d (IPv4). EXITING", v.https_port);
 			return 1;
 		}
 #endif /* V6SOCKETS_ARE_V6ONLY */
diff --git a/miniupnpd/netfilter/iptpinhole.c b/miniupnpd/netfilter/iptpinhole.c
index 978e4c0..861435e 100644
--- a/miniupnpd/netfilter/iptpinhole.c
+++ b/miniupnpd/netfilter/iptpinhole.c
@@ -297,7 +297,7 @@ delete_pinhole(unsigned short uid)
 			info = (const struct ip6t_tcp *)&match->data;
 			if((info->spts[0] == p->sport) && (info->dpts[0] == p->dport)) {
 				if(!ip6tc_delete_num_entry(miniupnpd_v6_filter_chain, index, h)) {
-					syslog(LOG_ERR, "ip6tc_delete_num_entry(%s,%d,...): %s",
+					syslog(LOG_ERR, "ip6tc_delete_num_entry(%s,%u,...): %s",
 					       miniupnpd_v6_filter_chain, index, ip6tc_strerror(errno));
 					goto error;
 				}
diff --git a/miniupnpd/pcplearndscp.c b/miniupnpd/pcplearndscp.c
index 4a325f6..55814d3 100644
--- a/miniupnpd/pcplearndscp.c
+++ b/miniupnpd/pcplearndscp.c
@@ -228,7 +228,7 @@ read_learn_dscp_line(struct dscp_values *dscpvalues, char *p)
 				dscpvalues->dscp_value = 38;
 				break;
 			default:
-				fprintf(stderr, "Unknown AF value %u \n", af_value);
+				fprintf(stderr, "Unknown AF value %d \n", af_value);
 				goto exit_err_and_cleanup;
 			}
 			}
diff --git a/miniupnpd/portinuse.c b/miniupnpd/portinuse.c
index 696a5c4..3c664bd 100644
--- a/miniupnpd/portinuse.c
+++ b/miniupnpd/portinuse.c
@@ -79,7 +79,7 @@ port_in_use(const char *if_name,
 		ip_addr_str[0] = '\0';
 	}
 
-	syslog(LOG_DEBUG, "Check protocol %s for port %d on ext_if %s %s, %08X",
+	syslog(LOG_DEBUG, "Check protocol %s for port %u on ext_if %s %s, %08X",
 	    (proto==IPPROTO_TCP)?"tcp":"udp", eport, if_name,
 	    ip_addr_str, (unsigned)ip_addr.s_addr);
 
@@ -101,7 +101,7 @@ port_in_use(const char *if_name,
 			/* TODO add IPV6 support if enabled
 			 * Presently assumes IPV4 */
 #ifdef DEBUG
-			syslog(LOG_DEBUG, "port_in_use check port %d and address %s", tmp_port, eaddr);
+			syslog(LOG_DEBUG, "port_in_use check port %u and address %s", tmp_port, eaddr);
 #endif
 			if (tmp_port == eport) {
 				char tmp_addr[4];