diff -u b/README.md b/README.md
--- b/README.md
+++ b/README.md
@@ -26,8 +26,8 @@
 go to /admin/config/clear-field/settings
-Steps 
+Steps
 1. Enable Clear Field by tick marking.
 2. Select Type of Button. Is it ?
-     a. Simple X 
+     a. Simple X
      b. Fontawesome for all generic fields
-3. You can add text and tooltip which you need to add along with icon 
+3. You can add text and tooltip which you need to add along with icon
    or keep it empty if not needed.
diff -u b/clear_field.module b/clear_field.module
--- b/clear_field.module
+++ b/clear_field.module
@@ -6,6 +6,7 @@
  */
 
 use Drupal\Core\Form\FormStateInterface;
+use Drupal\Core\Routing\RouteMatchInterface;
 
 /**
  * Implements hook_help().