diff --git a/templates/sibs-multibanco-instructions.html.twig b/templates/sibs-multibanco-instructions.html.twig
index bf87e2b..b62de47 100644
--- a/templates/sibs-multibanco-instructions.html.twig
+++ b/templates/sibs-multibanco-instructions.html.twig
@@ -1,7 +1,7 @@
 <div{{ attributes }}>
   <p>{{ 'Please pay this invoice:'|t }}</p>
   <p>{{ 'MB entity'|t }}: <strong>{{ sibs_payment_entity }}</strong></p>
-  <p>{{ 'MB reference'|t }}: <strong>{{ pmt_ref|number_format(0,'',' ') }}</strong></p>
+  <p>{{ 'MB reference'|t }}: <strong>{{ pmt_ref[:3] ~ " " ~ pmt_ref[3:3] ~ " " ~ pmt_ref[6:] }}</strong></p>
   <p>{{ 'Amount: @amount'|t({ '@amount': amount|commerce_price_format }) }}</p>
   <p>{{ 'You have to finish your payment until @validity_time'|t({ '@validity_time': validity_timestamp|format_date('medium') }) }}</p>
 </div>