diff --git a/_includes/head.html b/_includes/head.html
index bc97802851..4b7d34bcd7 100644
--- a/_includes/head.html
+++ b/_includes/head.html
@@ -6,7 +6,7 @@
   <meta content="frame-ancestors 'none'" http-equiv="Content-Security-Policy" />
   <meta content="deny" http-equiv="X-Frame-Options" />
 
-  {% if include.unify %}
+  {% if include.unify and jekyll.environment == "production" %}
   <meta name="unify" content="true" />
   {% endif %}