diff --git a/wiki-hemera/config.yaml b/wiki-hemera/config.yaml
index ed27408..f826437 100644
--- a/wiki-hemera/config.yaml
+++ b/wiki-hemera/config.yaml
@@ -32,7 +32,7 @@ params:
 
     footer:
         since: 
-        customText: "GPLv3.0 for the extensive use of <a href="https://github.com/CaiJimmy/hugo-theme-stack">Stack</a>"
+        customText: 'GPLv3.0 for the extensive use of <a href="https://github.com/CaiJimmy/hugo-theme-stack">Stack</a>'
 
     dateFormat:
         published: Jan 02, 2006