diff --git a/src/nxlink.c b/src/nxlink.c
index 9eb7789..a12c5b9 100644
--- a/src/nxlink.c
+++ b/src/nxlink.c
@@ -422,7 +422,7 @@ static void showHelp() {
 	puts("Usage: nxlink [options] nrofile\n");
 	puts("--help,    -h   Display this information");
 	puts("--address, -a   Hostname or IPv4 address of Switch");
-    puts("--port,    -z   Port of Switch netloader server");
+	puts("--port,    -z   Port of Switch netloader server");
 	puts("--retries, -r   number of times to ping before giving up");
 	puts("--path   , -p   set upload path for file");
 	puts("--args          args to send to nro");
@@ -489,7 +489,7 @@ int main(int argc, char **argv) {
 	char *address = NULL;
 	char *basepath = NULL;
 	char *finalpath = NULL;
-    char *port = NULL;
+	char *port = NULL;
 	char *endarg = NULL;
 	char *extra_args = NULL;
 	int retries = 10;
@@ -505,7 +505,7 @@ int main(int argc, char **argv) {
 			{"address", required_argument, 0,	'a'},
 			{"retries", required_argument, 0,	'r'},
 			{"path",    required_argument, 0,	'p'},
-            {"port",    required_argument, 0,   'z'},
+			{"port",    required_argument, 0,   'z'},
 			{"args",    required_argument, 0,  NRO_ARGS},
 			{"help",    no_argument,       0,	'h'},
 			{"server",  no_argument,       &server,  1 },
@@ -525,9 +525,9 @@ int main(int argc, char **argv) {
 		case 'a':
 			address = optarg;
 			break;
-        case 'z':
-            port = optarg;
-            break;
+		case 'z':
+			port = optarg;
+			break;
 		case 'r':
 			errno = 0;
 			retries = strtoul(optarg, &endarg, 0);
@@ -646,10 +646,10 @@ int main(int argc, char **argv) {
 		return EXIT_FAILURE;
 	}
 
-    int srvPort = NETLOADER_SERVER_PORT;
-    if (port != NULL) {
-        srvPort = atoi(port);
-    }
+	int srvPort = NETLOADER_SERVER_PORT;
+	if (port != NULL) {
+	    srvPort = atoi(port);
+	}
 
 	int res = sendNROFile(nxaddr.s_addr,finalpath,filesize,fh,srvPort);