diff --git a/src/wp-includes/js/media/controllers/cropper.js b/src/wp-includes/js/media/controllers/cropper.js
index c1a35beb98..a23b226406 100644
--- a/src/wp-includes/js/media/controllers/cropper.js
+++ b/src/wp-includes/js/media/controllers/cropper.js
@@ -18,8 +18,10 @@ Cropper = wp.media.controller.State.extend({
 		toolbar:     'crop',
 		content:     'crop',
 		router:      false,
+		canSkipCrop: false,
 
-		canSkipCrop: false
+		// Default doCrop Ajax arguments to allow the Customizer (for example) to inject state.
+		doCropArgs: {}
 	},
 
 	activate: function() {
@@ -103,11 +105,15 @@ Cropper = wp.media.controller.State.extend({
 	},
 
 	doCrop: function( attachment ) {
-		return wp.ajax.post( 'custom-header-crop', {
-			nonce: attachment.get('nonces').edit,
-			id: attachment.get('id'),
-			cropDetails: attachment.get('cropDetails')
-		} );
+		return wp.ajax.post( 'custom-header-crop', _.extend(
+			{},
+			this.defaults.doCropArgs,
+			{
+				nonce: attachment.get( 'nonces' ).edit,
+				id: attachment.get( 'id' ),
+				cropDetails: attachment.get( 'cropDetails' )
+			}
+		) );
 	}
 });