diff --git a/src/vaadin-app-layout.html b/src/vaadin-app-layout.html
index ff2a0e2..b3fac40 100644
--- a/src/vaadin-app-layout.html
+++ b/src/vaadin-app-layout.html
@@ -316,6 +316,7 @@
              * Defines whether navbar or drawer will come first visually.
              * - By default (`primary-section="navbar"`), the navbar takes the full available width and moves the drawer down.
              * - If `primary-section="drawer"` is set, then the drawer will move the navbar, taking the full available height.
+             * @attr {navbar|drawer} primary-section
              * @type {!PrimarySection}
              */
             primarySection: {
@@ -331,6 +332,7 @@
              * Its default value depends on the viewport:
              * - `true`, for desktop size views
              * - `false`, for mobile size views
+             * @attr {boolean} drawer-opened
              * @type {boolean}
              */
             drawerOpened: {