diff --git a/src/Plugin/Field/FieldFormatter/TablefieldFormatter.php b/src/Plugin/Field/FieldFormatter/TablefieldFormatter.php
index 0d5fbb8..176f946 100644
--- a/src/Plugin/Field/FieldFormatter/TablefieldFormatter.php
+++ b/src/Plugin/Field/FieldFormatter/TablefieldFormatter.php
@@ -54,7 +54,7 @@ class TablefieldFormatter extends FormatterBase implements ContainerFactoryPlugi
                               ModuleHandlerInterface $moduleHandler) {
     parent::__construct($plugin_id, $plugin_definition, $field_definition, $settings, $label, $view_mode, $third_party_settings);
     $this->currentUser = $currentUser;
-    $this->ModuleHandler = $moduleHandler;
+    $this->moduleHandler = $moduleHandler;
   }
 
   /**
@@ -239,7 +239,7 @@ class TablefieldFormatter extends FormatterBase implements ContainerFactoryPlugi
         ];
 
         // Extend render array if responsive_tables_filter module is enabled.
-        if ($this->ModuleHandler->moduleExists('responsive_tables_filter')) {
+        if ($this->moduleHandler->moduleExists('responsive_tables_filter')) {
           array_push($render_array['tablefield']['#attributes']['class'], 'tablesaw', 'tablesaw-stack');
           $render_array['tablefield']['#attributes']['data-tablesaw-mode'] = 'stack';
           $render_array['tablefield']['#attached'] = [