diff --git a/src/wp-admin/css/common.css b/src/wp-admin/css/common.css
index a468d81395..42c4c7be46 100644
--- a/src/wp-admin/css/common.css
+++ b/src/wp-admin/css/common.css
@@ -1308,6 +1308,10 @@ div.error {
 	padding: 1px 12px;
 }
 
+div[class="update-message"] { /* back-compat for pre-4.6 */
+	padding: 0.5em 12px 0.5em 0;
+}
+
 .notice p,
 .notice-title,
 div.updated p,
diff --git a/src/wp-admin/css/list-tables.css b/src/wp-admin/css/list-tables.css
index 8443a72416..b66f0c0d84 100644
--- a/src/wp-admin/css/list-tables.css
+++ b/src/wp-admin/css/list-tables.css
@@ -1350,7 +1350,8 @@ ul.cat-checklist {
 	padding: 0;
 }
 
-.plugins .plugin-update-tr .notice {
+.plugins .plugin-update-tr .notice,
+.plugins .plugin-update-tr div[class="update-message"] { /* back-compat for pre-4.6 */
 	margin: 5px 20px 15px 40px;
 }