diff --git a/src/wp-includes/block-editor.php b/src/wp-includes/block-editor.php
index d96569e331..7fc1e75573 100644
--- a/src/wp-includes/block-editor.php
+++ b/src/wp-includes/block-editor.php
@@ -189,7 +189,7 @@ function get_default_block_editor_settings() {
 	}
 
 	$default_size       = get_option( 'image_default_size', 'large' );
-	$image_default_size = in_array( $default_size, array_keys( $image_size_names ), true ) ? $image_default_size : 'large';
+	$image_default_size = in_array( $default_size, array_keys( $image_size_names ), true ) ? $default_size : 'large';
 
 	$image_dimensions = array();
 	$all_sizes        = wp_get_registered_image_subsizes();