diff --git a/src/wp-admin/admin.php b/src/wp-admin/admin.php
index 2dd315daf9..88a4aa480d 100644
--- a/src/wp-admin/admin.php
+++ b/src/wp-admin/admin.php
@@ -221,8 +221,9 @@ if ( isset($plugin_page) ) {
 		 */
 		do_action( $page_hook );
 	} else {
-		if ( validate_file($plugin_page) )
-			wp_die(__('Invalid plugin page'));
+		if ( validate_file( $plugin_page ) ) {
+			wp_die( __( 'Invalid plugin page.' ) );
+		}
 
 		if ( !( file_exists(WP_PLUGIN_DIR . "/$plugin_page") && is_file(WP_PLUGIN_DIR . "/$plugin_page") ) && !( file_exists(WPMU_PLUGIN_DIR . "/$plugin_page") && is_file(WPMU_PLUGIN_DIR . "/$plugin_page") ) )
 			wp_die(sprintf(__('Cannot load %s.'), htmlentities($plugin_page)));