diff --git a/src/item/LegacyStringToItemParser.php b/src/item/LegacyStringToItemParser.php
index afe22cd2d..ccc824b0d 100644
--- a/src/item/LegacyStringToItemParser.php
+++ b/src/item/LegacyStringToItemParser.php
@@ -31,7 +31,6 @@ use function file_get_contents;
 use function is_array;
 use function is_int;
 use function is_numeric;
-use function is_string;
 use function json_decode;
 use function str_replace;
 use function strtolower;