diff --git a/src/wp-content/themes/twentyfifteen/css/editor-style.css b/src/wp-content/themes/twentyfifteen/css/editor-style.css
index 93db376ae4..61667159eb 100644
--- a/src/wp-content/themes/twentyfifteen/css/editor-style.css
+++ b/src/wp-content/themes/twentyfifteen/css/editor-style.css
@@ -24,7 +24,6 @@ Description: Used to style the TinyMCE editor.
 
 html .mce-content-body {
 	font-size: 17px;
-	font-size: 1.7rem;
 	max-width: 660px;
 }