diff --git a/htdocs/accountancy/class/bookkeeping.class.php b/htdocs/accountancy/class/bookkeeping.class.php
index 32aefa2af14..c823ead80bf 100644
--- a/htdocs/accountancy/class/bookkeeping.class.php
+++ b/htdocs/accountancy/class/bookkeeping.class.php
@@ -2822,7 +2822,7 @@ class BookKeeping extends CommonObject
 								$error++;
 							}
 							$objtmp = $this->db->fetch_object($result);
-							$bookkeeping->subledger_label = $objtmp->subledger_label; // latest subledger label used
+							$bookkeeping->subledger_label = $objtmp->subledger_label ?? null; // latest subledger label used
 						} else {
 							$bookkeeping->subledger_account = null;
 							$bookkeeping->subledger_label = null;