diff --git a/infrastructure-centred/owlps-client/owlps-client.c b/infrastructure-centred/owlps-client/owlps-client.c
index 1c45d69..e49780e 100644
--- a/infrastructure-centred/owlps-client/owlps-client.c
+++ b/infrastructure-centred/owlps-client/owlps-client.c
@@ -284,7 +284,6 @@ inline void create_socket()
 void make_packet()
 {
   int offset ; // Index used to create the packet
-  int size ; // Packet size
   struct timeval request_time ;
 
   gettimeofday(&request_time, NULL) ;
@@ -294,9 +293,9 @@ void make_packet()
       printf("Calibration time: %llu\n", timeval_to_ms(request_time)) ;
 
       offset = 0 ;
-      size =
+      packet_size =
         sizeof(char) * 2 + sizeof(struct timeval) + sizeof(float) * 3 ;
-      packet = malloc(size) ;
+      packet = malloc(packet_size) ;
 
       packet[offset++] = PACKET_TYPE_CALIBRATION ; // Packet type
       memcpy(&packet[offset], &request_time, sizeof(request_time)) ;
@@ -316,8 +315,8 @@ void make_packet()
   else // Standard packet
     {
       printf("Request time: %llu\n", timeval_to_ms(request_time)) ;
-      size = sizeof(char) + sizeof(struct timeval) ;
-      packet = malloc(size) ;
+      packet_size = sizeof(char) + sizeof(struct timeval) ;
+      packet = malloc(packet_size) ;
       packet[0] = PACKET_TYPE_NORMAL ; // Packet type
       memcpy(&packet[1], &request_time, sizeof(request_time)) ;
     }
@@ -356,8 +355,8 @@ void print_usage()
          "\t%s -d dest_ip [-p dest_port] [-i iface] [-t delay]"
          " [-n nb_packets] [-l [port]]\n"
          "Calibration request:\n"
-         "\t%s -d dest_ip [-i iface] [-t delay] [-n nb_packets]"
-         " direction x y z\n"
+         "\t%s -d dest_ip [-p dest_port] [-i iface] [-t delay]"
+         " [-n nb_packets] direction x y z\n"
          "\n"
          "Options:\n"
          "\t-h\t\tPrint this help.\n"