diff --git a/src/wp-admin/css/press-this.css b/src/wp-admin/css/press-this.css
index d14e6e6097..2ec2e26ae5 100644
--- a/src/wp-admin/css/press-this.css
+++ b/src/wp-admin/css/press-this.css
@@ -393,6 +393,7 @@ strong {
 .split-button {
 	position: relative;
 	display: inline-block;
+	vertical-align: middle;
 }
 
 .split-button-body {