diff --git a/htdocs/loan/class/loanschedule.class.php b/htdocs/loan/class/loanschedule.class.php
index ffe1942998e00..135198de4a7ce 100644
--- a/htdocs/loan/class/loanschedule.class.php
+++ b/htdocs/loan/class/loanschedule.class.php
@@ -315,7 +315,7 @@ public function update($user = 0, $notrigger = 0)
 			$this->note_public = trim($this->note_public);
 		}
 		if (isset($this->fk_bank)) {
-			$this->fk_bank = trim($this->fk_bank);
+			$this->fk_bank = (int) $this->fk_bank;
 		}
 		if (isset($this->fk_payment_loan)) {
 			$this->fk_payment_loan = (int) $this->fk_payment_loan;