Index: uspace/app/netecho/netecho.c
===================================================================
--- uspace/app/netecho/netecho.c	(revision 481b2127983b04e75c4fe155772a47791c5a565c)
+++ uspace/app/netecho/netecho.c	(revision f37f81191e1d41ef7d1cc5b6d9a9eaae109ddb4d)
@@ -220,5 +220,5 @@
 	// check the buffer size
 	if (size <= 0) {
-		fprintf(stderr, "Receive size too small (%d). Using 1024 bytes instead.\n", size);
+		fprintf(stderr, "Receive size too small (%zu). Using 1024 bytes instead.\n", size);
 		size = 1024;
 	}
@@ -262,5 +262,5 @@
 		// check the backlog
 		if (backlog <= 0) {
-			fprintf(stderr, "Accepted sockets queue size too small (%d). Using 3 instead.\n", size);
+			fprintf(stderr, "Accepted sockets queue size too small (%zu). Using 3 instead.\n", size);
 			backlog = 3;
 		}
@@ -325,5 +325,6 @@
 						break;
 					default:
-						fprintf(stderr, "Address family %d (0x%X) is not supported.\n", address->sa_family);
+						fprintf(stderr, "Address family %u (%#x) is not supported.\n",
+						    address->sa_family, address->sa_family);
 					}
 					// parse the source address
@@ -334,5 +335,6 @@
 						} else {
 							data[length] = '\0';
-							printf("Socket %d received %d bytes from %s:%d\n%s\n", socket_id, length, address_string, port, data);
+							printf("Socket %d received %zu bytes from %s:%d\n%s\n",
+							    socket_id, length, address_string, port, data);
 						}
 					}