diff --git a/autosubmit/job/job_packages.py b/autosubmit/job/job_packages.py
index 6fe699275b326bdd639f31e5659ccdb2224d1e9b..4090c6d843ed9f4682b21000c2ba007daa727229 100644
--- a/autosubmit/job/job_packages.py
+++ b/autosubmit/job/job_packages.py
@@ -18,7 +18,7 @@
 # along with Autosubmit.  If not, see <http://www.gnu.org/licenses/>.
 
 
-
+import json
 import os
 import random
 import time
@@ -422,6 +422,26 @@ class JobPackageThread(JobPackageBase):
             else:
                 self.exclusive = jobs[0].exclusive
             wr_custom_directives = configuration.experiment_data["WRAPPERS"].get(self.current_wrapper_section,{}).get("CUSTOM_DIRECTIVES",[])
+            # parse custom_directives
+            if type(wr_custom_directives) is list:
+                wr_custom_directives = json.dumps(wr_custom_directives)
+            wr_custom_directives = wr_custom_directives.replace("\'", "\"").strip("[]").strip(", ")
+            if wr_custom_directives == '':
+                if jobs[0].custom_directives is None:
+                    jobs[0].custom_directives = ''
+                wr_custom_directives = jobs[0].custom_directives
+                if type(wr_custom_directives) is list:
+                    wr_custom_directives = json.dumps(wr_custom_directives)
+                wr_custom_directives = wr_custom_directives.replace("\'", "\"").strip("[]").strip(", ")
+            if wr_custom_directives != '':
+                if wr_custom_directives[0] != "\"":
+                    wr_custom_directives = "\""+wr_custom_directives
+                if wr_custom_directives[-1] != "\"":
+                    wr_custom_directives = wr_custom_directives+"\""
+                wr_custom_directives = "[" + wr_custom_directives + "]"
+                wr_custom_directives = json.loads(wr_custom_directives)
+            else:
+                wr_custom_directives = []
             if len(str(wr_custom_directives)) > 0:
                 self.custom_directives = wr_custom_directives
             else:
diff --git a/test/unit/test_job_package.py b/test/unit/test_job_package.py
index 884c307d872d79900a2c34980edd3ebba613f59a..c1acdf4cacf12e83e6c4bf95ba3ced4208af3dde 100644
--- a/test/unit/test_job_package.py
+++ b/test/unit/test_job_package.py
@@ -3,28 +3,19 @@ from unittest import TestCase
 import os
 from pathlib import Path
 import inspect
-from copy import deepcopy
-from mock import Mock,MagicMock, mock_open , call
+import tempfile
+from mock import MagicMock
 from mock import patch
 
-from autosubmit.job.job_packages import JobPackageSimple, JobPackageVertical
 from autosubmit.job.job import Job
 from autosubmit.job.job_common import Status
-
-import shutil
-import tempfile
-
-from unittest import TestCase
-from mock import MagicMock
-from autosubmit.job.job_packager import JobPackager
 from autosubmit.job.job_list import JobList
-from autosubmit.job.job_dict import DicJobs
-from autosubmit.job.job_utils import Dependency
-from autosubmitconfigparser.config.yamlparser import YAMLParserFactory
 from autosubmit.job.job_list_persistence import JobListPersistenceDb
-from random import randrange
-from collections import OrderedDict
+from autosubmit.job.job_packages import JobPackageSimple, JobPackageVertical
 from autosubmitconfigparser.config.configcommon import AutosubmitConfig
+from autosubmitconfigparser.config.yamlparser import YAMLParserFactory
+
+
 class FakeBasicConfig:
     def __init__(self):
         pass
@@ -82,6 +73,7 @@ class TestJobPackage(TestCase):
         self.jobs[0].custom_directives = "dummy_directives"
         self.jobs[0].processors = "9"
         self.jobs[0]._processors = "9"
+        self.jobs[0]._platform = self.platform
         self.jobs[0].retrials = 0
         self.jobs[1].wallclock = "00:00"
         self.jobs[1].threads = ""
@@ -92,6 +84,7 @@ class TestJobPackage(TestCase):
         self.jobs[1].custom_directives = "dummy_directives2"
         self.jobs[1].processors = "9"
         self.jobs[1]._processors = "9"
+        self.jobs[1]._platform = self.platform
 
 
         self.wrapper_type = options.get('TYPE', 'vertical')
@@ -155,7 +148,7 @@ class TestJobPackage(TestCase):
         self.assertEqual(self.job_package_wrapper._wrapper_data["PARTITION"], "bsc32")
         self.assertEqual(self.job_package_wrapper._wrapper_data["THREADS"], "30")
         self.assertEqual(self.job_package_wrapper._wrapper_data["TASKS"], "40")
-        self.assertEqual(self.job_package_wrapper._wrapper_data["CUSTOM_DIRECTIVES"], "['#SBATCH --mem=1000']")
+        self.assertEqual(self.job_package_wrapper._wrapper_data["CUSTOM_DIRECTIVES"], ['#SBATCH --mem=1000'])