diff --git a/src/string/StringBuilder.zig b/src/string/StringBuilder.zig
index 803fdcd4ef..25af0cbf96 100644
--- a/src/string/StringBuilder.zig
+++ b/src/string/StringBuilder.zig
@@ -66,7 +66,7 @@ pub fn append16(this: *StringBuilder, slice: []const u16, fallback_allocator: st
         var list = std.ArrayList(u8).init(fallback_allocator);
         var out = bun.strings.toUTF8ListWithTypeBun(&list, []const u16, slice, false) catch return null;
         out.append(0) catch return null;
-        return list.items[0 .. list.items.len - 1 :0];
+        return out.items[0 .. out.items.len - 1 :0];
     }
 }