diff --git a/koha-tmpl/intranet-tmpl/prog/en/includes/patron-age.inc b/koha-tmpl/intranet-tmpl/prog/en/includes/patron-age.inc
index adc14161fa..f55a54b0bd 100644
--- a/koha-tmpl/intranet-tmpl/prog/en/includes/patron-age.inc
+++ b/koha-tmpl/intranet-tmpl/prog/en/includes/patron-age.inc
@@ -1,9 +1,12 @@
+[%# The variable patron must be passed, with either a Koha::Patron, or a HASHREF with the 'age' key -%]
 [%- USE KohaDates -%]
 [%- USE I18N -%]
 [%- IF ( patron ) -%]
     [%- IF ( patron.dateofbirth ) -%]
-        [%- patron.dateofbirth | $KohaDates %]
         [%- SET age = (patron.get_age != undef) ? patron.get_age : patron.age -%]
-        <span class='age_years'>[% I18N.tnx('({age} year)', '({age} years)', age, { age => age }) | html %]</span>
+        [%- IF age %]
+            [%- patron.dateofbirth | $KohaDates %]
+            <span class='age_years'>[% I18N.tnx('({age} year)', '({age} years)', age, { age => age }) | html %]</span>
+        [%- END -%]
    [%- END -%]
 [%- END -%]