diff --git a/account_banking/banking_import_transaction.py b/account_banking/banking_import_transaction.py
index 2d7533b73..8ef9aaa01 100644
--- a/account_banking/banking_import_transaction.py
+++ b/account_banking/banking_import_transaction.py
@@ -1902,7 +1902,7 @@ class account_bank_statement_line(osv.osv):
         import_transaction_pool = self.pool.get('banking.import.transaction')
         if ids and isinstance(ids, (int, long)):
             ids = [ids]
-        if context = None:
+        if context is None:
             context = {}
         localcontext = context.copy()
         localcontext['transaction_no_duplicate_search'] = True