diff --git a/editor/block-toolbar/index.js b/editor/block-toolbar/index.js
index 7e57b5ff2ddfb..a0489be8e7e93 100644
--- a/editor/block-toolbar/index.js
+++ b/editor/block-toolbar/index.js
@@ -24,7 +24,7 @@ import BlockRightMenu from '../block-settings-menu';
 /**
  * Module Constants
  */
-const { LEFT, RIGHT, ESCAPE, ALT } = keycodes;
+const { LEFT, RIGHT, ESCAPE, F10, isMetaKey } = keycodes;
 
 function FirstChild( { children } ) {
 	const childrenArray = Children.toArray( children );
@@ -72,7 +72,7 @@ class BlockToolbar extends Component {
 		const tabbables = focus.tabbable.find( this.toolbar );
 		const indexOfTabbable = tabbables.indexOf( document.activeElement );
 
-		if ( event.keyCode === ALT ) {
+		if ( isMetaKey( event.keyCode ) || ( event.keyCode === F10 && event.altKey ) ) {
 			if ( tabbables.length ) {
 				tabbables[ 0 ].focus();
 			}
diff --git a/utils/keycodes.js b/utils/keycodes.js
index c3d63bb678c8c..9488cf4e595e5 100644
--- a/utils/keycodes.js
+++ b/utils/keycodes.js
@@ -1,6 +1,7 @@
 export const BACKSPACE = 8;
 export const TAB = 9;
 export const ENTER = 13;
+export const CTRL = 17;
 export const ALT = 18;
 export const ESCAPE = 27;
 export const SPACE = 32;
@@ -9,3 +10,20 @@ export const UP = 38;
 export const RIGHT = 39;
 export const DOWN = 40;
 export const DELETE = 46;
+
+export const F10 = 121;
+
+export const MAC_RIGHT = 93;
+export const MAC_LEFT = 91;
+export const MAC_FIREFOX = 224;
+
+function isMac() {
+	return window.navigator.platform.toLowerCase().indexOf( 'mac' ) !== -1;
+}
+
+export function isMetaKey( keyCode ) {
+	return isMac()
+		// The keyCode depends on the browser and the left/right might be different
+		? [ MAC_FIREFOX, MAC_LEFT, MAC_RIGHT ].indexOf( keyCode ) !== -1
+		: CTRL;
+}