diff --git a/function.php b/function.php
index fa535912..3aafd866 100644
--- a/function.php
+++ b/function.php
@@ -44,8 +44,8 @@ if (!function_exists('isJson')) {
 	function isJson(?string $string): bool
 	{
 		if (is_null($string)) return false;
-		return str_starts_with($string, '{') && str_starts_with($string, '[')
-			&& str_ends_with($string, '}') && str_ends_with($string, ']');
+		return (str_starts_with($string, '{') && str_ends_with($string, '}'))
+			|| (str_ends_with($string, '[') && str_starts_with($string, ']'));
 	}
 
 }