diff --git src/wp-includes/widgets/class-wp-widget-text.php src/wp-includes/widgets/class-wp-widget-text.php
index 434a123f90..1867d122e6 100644
--- src/wp-includes/widgets/class-wp-widget-text.php
+++ src/wp-includes/widgets/class-wp-widget-text.php
@@ -91,11 +91,11 @@ class WP_Widget_Text extends WP_Widget {
 				 *
 				 * @since 4.8.0
 				 *
-				 * @param string         $widget_text The widget content.
-				 * @param array          $instance    Array of settings for the current widget.
-				 * @param WP_Widget_Text $this        Current Text widget instance.
+				 * @param string         $text     The widget content.
+				 * @param array          $instance Array of settings for the current widget.
+				 * @param WP_Widget_Text $this     Current Text widget instance.
 				 */
-				$text = apply_filters( 'widget_text_content', $widget_text, $instance, $this );
+				$text = apply_filters( 'widget_text_content', $text, $instance, $this );
 
 			} elseif ( $instance['filter'] ) {
 				$text = wpautop( $text ); // Back-compat for instances prior to 4.8.