diff --git a/htdocs/langs/en_US/accountancy.lang b/htdocs/langs/en_US/accountancy.lang
index ca1f98bf64c..3447d2a0a98 100644
--- a/htdocs/langs/en_US/accountancy.lang
+++ b/htdocs/langs/en_US/accountancy.lang
@@ -142,7 +142,7 @@ ACCOUNTING_LENGTH_AACCOUNT=Length of the third-party accounting accounts (If you
 ACCOUNTING_MANAGE_ZERO=Allow to manage different number of zeros at the end of an accounting account. Needed by some countries (like Switzerland). If set to off (default), you can set the following two parameters to ask the application to add virtual zeros.
 BANK_DISABLE_DIRECT_INPUT=Disable direct recording of transaction in bank account
 ACCOUNTING_ENABLE_EXPORT_DRAFT_JOURNAL=Enable draft export on journal
-ACCOUNTANCY_COMBO_FOR_AUX=Enable combo list for subsidiary account
+ACCOUNTANCY_COMBO_FOR_AUX=Enable combo list for subsidiary account (may be slow if you have a lot of third parties)
 
 ACCOUNTING_SELL_JOURNAL=Sell journal
 ACCOUNTING_PURCHASE_JOURNAL=Purchase journal