diff --git a/wp-admin/includes/plugin-install.php b/wp-admin/includes/plugin-install.php
index 4e24f7792f..134bd8998a 100644
--- a/wp-admin/includes/plugin-install.php
+++ b/wp-admin/includes/plugin-install.php
@@ -496,9 +496,9 @@ function install_plugin_information() {
 	<div id="section-holder" class="wrap">
 	<?php
 		if ( ! empty( $api->tested ) && version_compare( substr( $GLOBALS['wp_version'], 0, strlen( $api->tested ) ), $api->tested, '>' ) ) {
-			echo '<div class="updated"><p>' . __('<strong>Warning:</strong> This plugin has <strong>not been tested</strong> with your current version of WordPress.') . '</p></div>';
+			echo '<div class="error"><p>' . __('<strong>Warning:</strong> This plugin has <strong>not been tested</strong> with your current version of WordPress.') . '</p></div>';
 		} else if ( ! empty( $api->requires ) && version_compare( substr( $GLOBALS['wp_version'], 0, strlen( $api->requires ) ), $api->requires, '<' ) ) {
-			echo '<div class="updated"><p>' . __('<strong>Warning:</strong> This plugin has <strong>not been marked as compatible</strong> with your version of WordPress.') . '</p></div>';
+			echo '<div class="error"><p>' . __('<strong>Warning:</strong> This plugin has <strong>not been marked as compatible</strong> with your version of WordPress.') . '</p></div>';
 		}
 
 		foreach ( (array) $api->sections as $section_name => $content ) {