diff --git a/wp-includes/class-wp-customize.php b/wp-includes/class-wp-customize.php
index 6b8230eb0c..b0758111ba 100644
--- a/wp-includes/class-wp-customize.php
+++ b/wp-includes/class-wp-customize.php
@@ -209,12 +209,7 @@ final class WP_Customize {
 
 		?>
 		<script type="text/javascript">
-			(function() {
-				if ( typeof wp === 'undefined' || ! wp.customize )
-					return;
-
-				wp.customize.settings = <?php echo json_encode( $settings ); ?>;
-			})();
+			var _wpCustomizeSettings = <?php echo json_encode( $settings ); ?>;
 		</script>
 		<?php
 	}
diff --git a/wp-includes/customize-controls.php b/wp-includes/customize-controls.php
index 0e562298a7..9eb024961d 100644
--- a/wp-includes/customize-controls.php
+++ b/wp-includes/customize-controls.php
@@ -115,12 +115,7 @@ do_action( 'customize_controls_print_scripts' );
 
 	?>
 	<script type="text/javascript">
-		(function() {
-			if ( typeof wp === 'undefined' || ! wp.customize )
-				return;
-
-			wp.customize.settings = <?php echo json_encode( $settings ); ?>;
-		})();
+		var _wpCustomizeSettings = <?php echo json_encode( $settings ); ?>;
 	</script>
 </body>
 </html>
diff --git a/wp-includes/js/customize-controls.dev.js b/wp-includes/js/customize-controls.dev.js
index f405a87d64..e771756023 100644
--- a/wp-includes/js/customize-controls.dev.js
+++ b/wp-includes/js/customize-controls.dev.js
@@ -366,6 +366,7 @@
 	};
 
 	$( function() {
+		api.settings = window._wpCustomizeSettings;
 		if ( ! api.settings )
 			return;
 
diff --git a/wp-includes/js/customize-preview.dev.js b/wp-includes/js/customize-preview.dev.js
index 89adb96334..393e593b8e 100644
--- a/wp-includes/js/customize-preview.dev.js
+++ b/wp-includes/js/customize-preview.dev.js
@@ -31,6 +31,7 @@
 	});
 
 	$( function() {
+		api.settings = window._wpCustomizeSettings;
 		if ( ! api.settings )
 			return;