diff --git a/src/wp-admin/css/themes.css b/src/wp-admin/css/themes.css
index 5d3a857e69..79247adaca 100644
--- a/src/wp-admin/css/themes.css
+++ b/src/wp-admin/css/themes.css
@@ -419,6 +419,10 @@
 	border-bottom: 1px solid #ddd;
 }
 
+.theme-overlay .theme-header button {
+	padding: 0;
+}
+
 .theme-overlay .theme-header .close {
 	cursor: pointer;
 	height: 48px;