diff --git a/product/ERP5/bootstrap/erp5_core/SkinTemplateItem/portal_skins/erp5_core/Base_getCategoriesSpreadSheetMapping.xml b/product/ERP5/bootstrap/erp5_core/SkinTemplateItem/portal_skins/erp5_core/Base_getCategoriesSpreadSheetMapping.xml
index cd4cf1685592a301a872ff8295d49d057abcaaf7..dd5d2c32f12d76cba8d9bc83d76f5d387c544f1c 100644
--- a/product/ERP5/bootstrap/erp5_core/SkinTemplateItem/portal_skins/erp5_core/Base_getCategoriesSpreadSheetMapping.xml
+++ b/product/ERP5/bootstrap/erp5_core/SkinTemplateItem/portal_skins/erp5_core/Base_getCategoriesSpreadSheetMapping.xml
@@ -174,7 +174,7 @@ for table_name in spreadsheets.keys():\n
       # started, that seems the path definition has ended\n
       if \'path_0\' in property_map.values():\n
         path_index == None\n
-      property_map[column_index] = column_id\n
+      property_map[column_index] = column_id.encode(\'utf8\')\n
     column_index += 1\n
 \n
   # Construct categories data (with absolute path) from table lines\n
diff --git a/product/ERP5/bootstrap/erp5_core/bt/revision b/product/ERP5/bootstrap/erp5_core/bt/revision
index e517ae7abfeb03256eb2967ed960048ee4dadeb6..7e752471bfa3b8caabafb3764cb3ebfac522052b 100644
--- a/product/ERP5/bootstrap/erp5_core/bt/revision
+++ b/product/ERP5/bootstrap/erp5_core/bt/revision
@@ -1 +1 @@
-917
\ No newline at end of file
+918
\ No newline at end of file
diff --git a/product/ERP5OOo/tests/testOOoImport.py b/product/ERP5OOo/tests/testOOoImport.py
index 0f295084274024bb3c637a722dd2cf9b06f4e252..10ade50bafe6657dbff8e8cade0ec8a7ac9c597a 100644
--- a/product/ERP5OOo/tests/testOOoImport.py
+++ b/product/ERP5OOo/tests/testOOoImport.py
@@ -220,6 +220,8 @@ class TestOOoImport(ERP5TypeTestCase):
     # strings are encoded in UTF8
     self.assertTrue(isinstance(region[1]['title'], str))
     self.assertTrue(isinstance(region[1]['path'], str))
+    for k in region[1].keys():
+      self.assertTrue(isinstance(k, str), (k, type(k)))
 
   def test_CategoryTool_importCategoryFile(self):
     # tests simple use of CategoryTool_importCategoryFile script