diff --git a/src/activities/lang/resource/poToDataset.py b/src/activities/lang/resource/poToDataset.py
index 380a4ca85..693f3fc3e 100644
--- a/src/activities/lang/resource/poToDataset.py
+++ b/src/activities/lang/resource/poToDataset.py
@@ -1,42 +1,46 @@
 # -* coding: utf-8 -*-
 #!/usr/bin/python3
 #
 # GCompris - po2Dataset.py
 #
 # Copyright (C) 2019 Johnny Jazeix <jazeix@gmail.com>
 #
 #   This program is free software; you can redistribute it and/or modify
 #   it under the terms of the GNU General Public License as published by
 #   the Free Software Foundation; either version 3 of the License, or
 #   (at your option) any later version.
 #
 #   This program is distributed in the hope that it will be useful,
 #   but WITHOUT ANY WARRANTY; without even the implied warranty of
 #   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 #   GNU General Public License for more details.
 #
 #   You should have received a copy of the GNU General Public License
 #   along with this program; if not, see <https://www.gnu.org/licenses/>.
 
 import json
 import polib
 import sys
 import urllib
 
 from urllib.parse import unquote
 
 if len(sys.argv) != 3:
     print("Usage: po2Dataset.py po_file json_file")
     sys.exit(1)
 
 poFile = polib.pofile(sys.argv[1], encoding='utf-8')
 jsonFile = sys.argv[2]
 data = {}
 
+if poFile.percent_translated() < 40:
+    print("Need at least 40% of the words translated to create the json data file")
+    sys.exit(0)
+    
 for entry in poFile.translated_entries():
     word = entry.msgctxt
     data[word] = entry.msgstr
 
 with open(jsonFile, "w", encoding='utf-8') as data_file:
     json.dump(data, data_file, indent=4, sort_keys=True, ensure_ascii=False)
-
+    data_file.write("\n") # Add missing new line at end of file