diff --git a/layouts/_default/single.html b/layouts/_default/single.html
index 5efb41d..b36cf8a 100644
--- a/layouts/_default/single.html
+++ b/layouts/_default/single.html
@@ -23,10 +23,10 @@
   {{- end }}
 </div>
 
-{{- if eq $showChildren "cards" -}}
+{{- if hasPrefix $showChildren "card" -}}
 <div class="row">
   {{ range sort (sort $children "Date" "desc") "Weight" }}
-    {{ partial "card.html" . }}
+    {{ partial "card" . }}
   {{ end }}
 </div>
 {{- end }}
diff --git a/layouts/shortcodes/embed.html b/layouts/shortcodes/embed.md
similarity index 100%
rename from layouts/shortcodes/embed.html
rename to layouts/shortcodes/embed.md