diff --git a/python_apps/airtime_analyzer/tools/ftp-upload-hook.sh b/python_apps/airtime_analyzer/tools/ftp-upload-hook.sh
index f5be38183..0174f9a07 100755
--- a/python_apps/airtime_analyzer/tools/ftp-upload-hook.sh
+++ b/python_apps/airtime_analyzer/tools/ftp-upload-hook.sh
@@ -1,4 +1,4 @@
-#! /bin/bash
+#!/bin/bash -xv
 
 post_file() {
     #kill process after 30 minutes (360*5=30 minutes)
@@ -28,7 +28,9 @@ post_file() {
 	
     api_key=$(awk -F "= " '/api_key/ {print $2}' $instance_conf_path)
 
-    until curl --max-time 30 $url -u $api_key":" -X POST -F "file=@${file_path}" -F "full_path=${file_path}"
+    # -f is needed to make curl fail if there's an HTTP error code
+    # -L is needed to follow redirects! (just in case)
+    until curl -fL --max-time 30 $url -u $api_key":" -X POST -F "file=@${file_path}" -F "full_path=${file_path}"
     do
         retry_count=$[$retry_count+1]
         if [ $retry_count -ge $max_retry ]; then