diff --git a/src/services/inventoryService.ts b/src/services/inventoryService.ts
index 9139d41c6..ccfaf0d04 100644
--- a/src/services/inventoryService.ts
+++ b/src/services/inventoryService.ts
@@ -284,6 +284,9 @@ export const addItem = async (
             };
         } else if (ExportResources[typeName].productCategory == "KubrowPetEggs") {
             const changes: IKubrowPetEggClient[] = [];
+            if (quantity < 0) {
+                throw new Error(`removal of KubrowPetEggs not handled`);
+            }
             for (let i = 0; i != quantity; ++i) {
                 const egg: IKubrowPetEggDatabase = {
                     ItemType: "/Lotus/Types/Game/KubrowPet/Eggs/KubrowEgg",
diff --git a/static/webui/index.html b/static/webui/index.html
index bb1c88dfe..f700994d7 100644
--- a/static/webui/index.html
+++ b/static/webui/index.html
@@ -89,7 +89,7 @@
                 <div class="card mb-3">
                     <h5 class="card-header" data-loc="inventory_addItems"></h5>
                     <form class="card-body input-group" onsubmit="doAcquireMiscItems();return false;">
-                        <input class="form-control" id="miscitem-count" type="number" min="1" value="1" />
+                        <input class="form-control" id="miscitem-count" type="number" value="1" />
                         <input class="form-control w-50" id="miscitem-type" list="datalist-miscitems" />
                         <button class="btn btn-primary" type="submit" data-loc="general_addButton"></button>
                     </form>
@@ -392,7 +392,7 @@
                             <h5 class="card-header" data-loc="mods_mods"></h5>
                             <div class="card-body">
                                 <form class="input-group mb-3" onsubmit="doAcquireMod();return false;">
-                                    <input class="form-control" id="mod-count" type="number" min="1" value="1"/>
+                                    <input class="form-control" id="mod-count" type="number" value="1"/>
                                     <input class="form-control w-50" id="mod-to-acquire" list="datalist-mods" />
                                     <button class="btn btn-primary" type="submit" data-loc="general_addButton"></button>
                                 </form>