diff --git a/installation/scripts/connect.sh b/installation/scripts/connect.sh
index ace884b..0633d5f 100644
--- a/installation/scripts/connect.sh
+++ b/installation/scripts/connect.sh
@@ -10,6 +10,19 @@ remote_port_1=$(echap "$remote_port_1")
 bytes_received=$(echap "$bytes_received")
 bytes_sent=$(echap "$bytes_sent")
 
+# Prevent the error : ERROR 1366 (22007) at line 1: Incorrect double value: '' for column 'log_received' at row 1
+
+if [ -z "$bytes_received" ]
+then
+      bytes_received=0
+fi
+
+if [ -z "$bytes_sent" ]
+then
+      bytes_sent=0
+fi
+
+
 # We insert data in the log table
 mysql -h$HOST -P$PORT -u$USER -p$PASS $DB -e "INSERT INTO log (log_id, user_id, log_trusted_ip, log_trusted_port, log_remote_ip, log_remote_port, log_start_time, log_end_time, log_received, log_send) VALUES(NULL, '$common_name','$trusted_ip', '$trusted_port','$ifconfig_pool_remote_ip', '$remote_port_1', now(),NULL, '$bytes_received', '$bytes_sent')"