diff --git a/htdocs/accountancy/class/accountancyexport.class.php b/htdocs/accountancy/class/accountancyexport.class.php
index 0c698c5059c..08ced92348f 100644
--- a/htdocs/accountancy/class/accountancyexport.class.php
+++ b/htdocs/accountancy/class/accountancyexport.class.php
@@ -882,7 +882,7 @@ class AccountancyExport
 				print $date_document . $separator;
 
 				// FEC:CompteNum
-				print $line->numero_compte . $separator;
+				print length_accountg($line->numero_compte) . $separator;
 
 				// FEC:CompteLib
 				print dol_string_unaccent($line->label_compte) . $separator;