diff --git a/src/wp-content/themes/twentyfifteen/css/blocks.css b/src/wp-content/themes/twentyfifteen/css/blocks.css
index df5b7515e4..5967ea52e9 100644
--- a/src/wp-content/themes/twentyfifteen/css/blocks.css
+++ b/src/wp-content/themes/twentyfifteen/css/blocks.css
@@ -395,6 +395,11 @@ p.has-drop-cap:not(:focus)::first-letter {
 	vertical-align: baseline;
 }
 
+.wp-block-buttons[style*="text-transform"] .wp-block-button__link,
+.wp-block-button[style*="text-transform"] .wp-block-button__link {
+	text-transform: inherit;
+}
+
 .is-style-outline .wp-block-button__link {
 	border: 2px solid;
 }
diff --git a/src/wp-content/themes/twentyfifteen/css/editor-blocks.css b/src/wp-content/themes/twentyfifteen/css/editor-blocks.css
index 860ca9c162..71afab38b7 100644
--- a/src/wp-content/themes/twentyfifteen/css/editor-blocks.css
+++ b/src/wp-content/themes/twentyfifteen/css/editor-blocks.css
@@ -759,6 +759,11 @@ p.has-drop-cap:not(:focus)::first-letter {
 	color: #fff;
 }
 
+.wp-block-buttons[style*="text-transform"] .wp-block-button__link,
+.wp-block-button[style*="text-transform"] .wp-block-button__link {
+	text-transform: inherit;
+}
+
 .is-style-outline .wp-block-button__link {
 	color: #333;
 }