diff --git a/src/wp-includes/post-template.php b/src/wp-includes/post-template.php
index 3d82ba81b641b..b2711b7c3c11a 100644
--- a/src/wp-includes/post-template.php
+++ b/src/wp-includes/post-template.php
@@ -411,8 +411,8 @@ function the_excerpt() {
  * @return string Post excerpt.
  */
 function get_the_excerpt( $post = null ) {
-	if ( is_bool( $post ) ) {
-		_deprecated_argument( __FUNCTION__, '2.3.0' );
+	if ( ! is_null( $post ) && ! is_numeric( $post ) && ! ( $post instanceof WP_Post ) ) {
+		_deprecated_argument( __FUNCTION__, '2.3.0', __( 'The bool $fakeit argument has been replaced with an int|WP_Post $post argument.' ) );
 	}
 
 	$post = get_post( $post );