diff --git a/freezer/main.py b/freezer/main.py
index 9a4a94ac..c1b5b1ca 100644
--- a/freezer/main.py
+++ b/freezer/main.py
@@ -18,7 +18,6 @@ Freezer main execution function
 """
 import json
 import os
-import signal
 import subprocess
 import sys
 
@@ -208,8 +207,6 @@ def main():
             CONF.print_help()
             sys.exit(1)
 
-        signal.signal(signal.SIGUSR1, utils.abort_subprocess)
-
         freezer_main(backup_args)
     except Exception as err:
         quiet = backup_args.quiet if backup_args else False
@@ -217,6 +214,7 @@ def main():
         LOG.critical("End freezer agent process unsuccessfully")
         return fail(1, err, quiet)
 
+
 if __name__ == '__main__':
 
     sys.exit(main())
diff --git a/freezer/scheduler/scheduler_job.py b/freezer/scheduler/scheduler_job.py
index cc48492b..7c48adc2 100644
--- a/freezer/scheduler/scheduler_job.py
+++ b/freezer/scheduler/scheduler_job.py
@@ -322,8 +322,11 @@ class Job(object):
             elif output:
                 self.upload_metadata(output)
 
-            if self.process.returncode == 33:
-                # This means the job action was aborted by the scheduler.
+            if self.process.returncode == -15:
+                # This means the job action was aborted by the scheduler
+                LOG.warning('Freezer-agent was killed by the scheduler. '
+                            'Cleanup should be done manually: container, '
+                            'mountpoint and lvm snapshots.')
                 return Job.ABORTED_RESULT
 
             elif self.process.returncode:
diff --git a/freezer/scheduler/utils.py b/freezer/scheduler/utils.py
index d2210bda..087988b5 100644
--- a/freezer/scheduler/utils.py
+++ b/freezer/scheduler/utils.py
@@ -114,7 +114,7 @@ def terminate_subprocess(pid, name):
     try:
         process = psutil.Process(pid)
         if process.name.startswith(name):
-            os.kill(pid, signal.SIGUSR1)
+            os.kill(pid, signal.SIGTERM)
         else:
             LOG.warning('The name {} does not match the pid {}'.format(
                 name, pid))
diff --git a/freezer/utils/utils.py b/freezer/utils/utils.py
index cfa11c27..29668234 100644
--- a/freezer/utils/utils.py
+++ b/freezer/utils/utils.py
@@ -23,7 +23,6 @@ import re
 import subprocess
 import sys
 import time
-import traceback
 
 from distutils import spawn as distspawn
 from functools import wraps
@@ -459,17 +458,6 @@ def set_max_process_priority():
         LOG.warning('Priority: {0}'.format(priority_error))
 
 
-def abort_subprocess(signum, frame):
-    try:
-        LOG.warning('Process {} has been aborted by the scheduler'.format(
-            os.getpid()))
-        raise Exception('Aborting process')
-    except Exception:
-        LOG.error(traceback.print_exc())
-    finally:
-        sys.exit(33)
-
-
 def days_to_seconds(n):
     """
     86400 seconds in a day