diff --git a/src/wp-includes/functions.php b/src/wp-includes/functions.php
index fd722195f9..006cb6cb7e 100644
--- a/src/wp-includes/functions.php
+++ b/src/wp-includes/functions.php
@@ -2677,7 +2677,7 @@ function wp_json_encode( $data, $options = 0, $depth = 512 ) {
 		$args = array( $data );
 	}
 
-	$json = call_user_func_array( 'json_encode', $args );
+	$json = @call_user_func_array( 'json_encode', $args );
 
 	// If json_encode() was successful, no need to do more sanity checking.
 	// ... unless we're in an old version of PHP, and json_encode() returned