diff --git a/combo/apps/search/migrations/0007_french_fts.py b/combo/apps/search/migrations/0007_french_fts.py
index b088a26d..6e9cb91b 100644
--- a/combo/apps/search/migrations/0007_french_fts.py
+++ b/combo/apps/search/migrations/0007_french_fts.py
@@ -2,8 +2,9 @@
 # Generated by Django 1.11.17 on 2020-02-19 08:20
 from __future__ import unicode_literals
 
-from django.db import migrations
+from django.db import migrations, transaction
 from django.db.migrations.operations.base import Operation
+from django.db.utils import InternalError, OperationalError, ProgrammingError
 
 
 class TextSearchConfiguration(Operation):
@@ -15,12 +16,26 @@ class TextSearchConfiguration(Operation):
     def database_forwards(self, app_label, schema_editor, from_state, to_state):
         if schema_editor.connection.vendor != 'postgresql':
             return
-        schema_editor.execute('CREATE EXTENSION IF NOT EXISTS unaccent SCHEMA public')
+        try:
+            with transaction.atomic():
+                try:
+                    schema_editor.execute('CREATE EXTENSION IF NOT EXISTS unaccent SCHEMA public')
+                except (OperationalError, ProgrammingError):
+                    # OperationalError if the extension is not available
+                    # ProgrammingError in case of denied permission
+                    dictionaries = 'french_stem'
+                else:
+                    dictionaries = 'public.unaccent, french_stem'
+        except InternalError:
+            # InternalError (current transaction is aborted, commands ignored
+            # until end of transaction block) would be raised when django-
+            # tenant-schemas set search_path.
+            pass
         schema_editor.execute('CREATE TEXT SEARCH CONFIGURATION french_unaccent( COPY = french )')
         schema_editor.execute(
                 'ALTER TEXT SEARCH CONFIGURATION french_unaccent '
                 'ALTER MAPPING FOR hword, hword_part, word '
-                'WITH public.unaccent, french_stem')
+                'WITH %s' % dictionaries)
 
     def database_backwards(self, app_label, schema_editor, from_state, to_state):
         if schema_editor.connection.vendor != 'postgresql':