diff --git a/themes/chosto/layouts/_default/summary.html b/themes/chosto/layouts/_default/summary.html
index aed7a27..5ffa370 100644
--- a/themes/chosto/layouts/_default/summary.html
+++ b/themes/chosto/layouts/_default/summary.html
@@ -55,7 +55,7 @@
       {{ end }}
       <div class="card-footer-item is-size-7">
         <time datetime="{{ .Date.Format `2006-01-02T15:04:05Z07:00` | safeHTML }}">
-          {{ .Date.Day }} {{ substr (index $.Site.Data.months_fr (printf "%d" .Date.Month)) 4 }} {{ .Date.Year }}
+          {{ .Date.Day }} {{ slicestr (index $.Site.Data.months_fr (printf "%d" .Date.Month)) 0 3 }} {{ .Date.Year }}
         </time>&nbsp;—&nbsp;{{ div .FuzzyWordCount 230 }} minutes
       </div>
     </footer>