diff --git a/src/wp-admin/js/customize-controls.js b/src/wp-admin/js/customize-controls.js
index c80ef86e52..58f9cb07ac 100644
--- a/src/wp-admin/js/customize-controls.js
+++ b/src/wp-admin/js/customize-controls.js
@@ -3781,11 +3781,6 @@
 
 			control.editor = wp.codeEditor.initialize( $textarea, settings );
 
-			// Refresh when receiving focus.
-			control.editor.codemirror.on( 'focus', function( codemirror ) {
-				codemirror.refresh();
-			});
-
 			/*
 			 * When the CodeMirror instance changes, mirror to the textarea,
 			 * where we have our "true" change event handler bound.