diff --git a/htdocs/core/lib/bank.lib.php b/htdocs/core/lib/bank.lib.php
index e3fb787657b..77b92447d3f 100644
--- a/htdocs/core/lib/bank.lib.php
+++ b/htdocs/core/lib/bank.lib.php
@@ -123,6 +123,29 @@ function bank_admin_prepare_head($object)
 	return $head;
 		}
 
+/**
+ *      Check IBAN number informations for a bank account
+ *
+ *      @param  Account     $account    A bank account
+ *      @return int                     True if informations are valid, false otherwise
+ */
+function checkIbanForAccount($account)
+{
+    require_once DOL_DOCUMENT_ROOT.'/includes/php-iban/oophp-iban.php';
+    $iban = new Iban();
+    $check = $iban->Verify($account->iban);
+    //print '<pre>'.print_r($iban, true).'</pre>';
+    if ($check) {
+        //print '<pre>OK</pre>';
+        return true;
+    } else {
+        //$suggest = $iban->MistranscriptionSuggestions($account->iban);
+        //print '<pre>'.print_r($suggest, true).'</pre>';
+        return false;
+    }
+
+}
+
 /**
  * 		Check account number informations for a bank account
  *
diff --git a/htdocs/societe/rib.php b/htdocs/societe/rib.php
index f57eb6a5b70..a615577a8c4 100644
--- a/htdocs/societe/rib.php
+++ b/htdocs/societe/rib.php
@@ -293,7 +293,15 @@ if ($socid && $action != 'edit' && $action != "create")
 	}
 
 	print '<tr><td valign="top">'.$langs->trans("IBAN").'</td>';
-	print '<td colspan="4">'.$account->iban.'</td></tr>';
+	print '<td colspan="4">'.$account->iban . '&nbsp;';
+    if (! empty($account->iban)) {
+        if (! checkIbanForAccount($account)) {
+            print img_picto($langs->trans("NotValid"),'warning');
+        } else {
+            print img_picto($langs->trans("IsValid"),'info');
+        }
+    }
+    print '</td></tr>';
 
 	print '<tr><td valign="top">'.$langs->trans("BIC").'</td>';
 	print '<td colspan="4">'.$account->bic.'</td></tr>';