diff --git a/src/utils/ids.rs b/src/utils/ids.rs
index ce4178d..b7b1e33 100644
--- a/src/utils/ids.rs
+++ b/src/utils/ids.rs
@@ -20,6 +20,7 @@ macro_rules! id_gen {
                         while ids.iter().any(|k| *k == id) {
                             id += 1;
                         }
+                        id += 1;
                         Some(id)
                     },
                 );