diff --git a/layouts/posts/single.html b/layouts/posts/single.html
index 01baa15..b10f134 100644
--- a/layouts/posts/single.html
+++ b/layouts/posts/single.html
@@ -24,7 +24,7 @@
       {{ if .Params.subtitle }}
       <strong>{{ .Params.subtitle | markdownify }}</strong>
       {{ end }}
-      {{ if .Params.author }}
+      {{ if (isset .Params "author") }}
       <pre>{{ partial "byline.html" . }}</pre>
       {{ end }}