diff --git a/tryton/trytond/trytond/backend/postgresql/database.py b/tryton/trytond/trytond/backend/postgresql/database.py
index 3c891d48f3..e5ef92947c 100644
--- a/tryton/trytond/trytond/backend/postgresql/database.py
+++ b/tryton/trytond/trytond/backend/postgresql/database.py
@@ -676,13 +676,12 @@ class Database(DatabaseInterface):
 
     def sequence_exist(self, connection, name):
         cursor = connection.cursor()
-        for schema in self.search_path:
-            cursor.execute('SELECT 1 '
-                'FROM information_schema.sequences '
-                'WHERE sequence_name = %s AND sequence_schema = %s',
-                (name, schema))
-            if cursor.rowcount:
-                return True
+        cursor.execute('SELECT 1 '
+            'FROM pg_sequences '
+            'WHERE sequencename = %s',
+            (name,))
+        if cursor.rowcount:
+            return True
         return False
 
     def sequence_create(