diff --git a/src/wp-content/themes/twentyseventeen/assets/css/editor-blocks.css b/src/wp-content/themes/twentyseventeen/assets/css/editor-blocks.css
index d32bad64f7..51e6511310 100644
--- a/src/wp-content/themes/twentyseventeen/assets/css/editor-blocks.css
+++ b/src/wp-content/themes/twentyseventeen/assets/css/editor-blocks.css
@@ -726,7 +726,7 @@ table.wp-block-table td:last-child {
 	white-space: nowrap;
 }
 
-.wp-block-button .wp-block-button__link[data-is-placeholder-visible=true] {
+.wp-block-button .wp-block-button__link[data-is-placeholder-visible="true"] {
     height: auto;
 }