diff --git src/wp-admin/css/common.css src/wp-admin/css/common.css
index 969cc5f..d749489 100644
--- src/wp-admin/css/common.css
+++ src/wp-admin/css/common.css
@@ -319,6 +319,16 @@ h6 {
 	font-weight: 600;
 }
 
+.rtl h1,
+.rtl h2,
+.rtl h3,
+.rtl h4,
+.rtl h5,
+.rtl h6 {
+	font-family: Arial, sans-serif;
+	font-weight: bold;
+}
+
 h1 {
 	font-size: 2em;
 	margin: .67em 0;