diff --git a/src/wp-includes/functions.php b/src/wp-includes/functions.php
index d82b2e54ba..f75c396328 100644
--- a/src/wp-includes/functions.php
+++ b/src/wp-includes/functions.php
@@ -3088,7 +3088,6 @@ function wp_check_filetype_and_ext( $file, $filename, $mimes = null ) {
 					'text/richtext',
 					'text/tsv',
 					'text/vtt',
-					'application/json',
 				),
 				true
 			)