diff --git a/src/controllers/custom/pushArchonCrystalUpgradeController.ts b/src/controllers/custom/pushArchonCrystalUpgradeController.ts
index cbe1023d..c12ea584 100644
--- a/src/controllers/custom/pushArchonCrystalUpgradeController.ts
+++ b/src/controllers/custom/pushArchonCrystalUpgradeController.ts
@@ -10,11 +10,13 @@ export const pushArchonCrystalUpgradeController: RequestHandler = async (req, re
     if (suit) {
         suit.ArchonCrystalUpgrades ??= [];
         const count = (req.query.count as number | undefined) ?? 1;
-        for (let i = 0; i != count; ++i) {
-            suit.ArchonCrystalUpgrades.push({ UpgradeType: req.query.type as string });
+        if (count >= 1 && count <= 10000) {
+            for (let i = 0; i != count; ++i) {
+                suit.ArchonCrystalUpgrades.push({ UpgradeType: req.query.type as string });
+            }
+            await inventory.save();
+            res.end();
         }
-        await inventory.save();
-        res.end();
     }
     res.status(400).end();
 };
diff --git a/static/webui/index.html b/static/webui/index.html
index 5b49578e..505c3665 100644
--- a/static/webui/index.html
+++ b/static/webui/index.html
@@ -114,7 +114,7 @@
                     <div class="card-body">
                         <p>You can use these unlimited slots to apply a wide range of upgrades.</p>
                         <form class="input-group mb-3" onsubmit="doPushArchonCrystalUpgrade();return false;">
-                            <input type="number" id="archon-crystal-add-count" min="1" value="1" class="form-control" style="max-width:100px" />
+                            <input type="number" id="archon-crystal-add-count" min="1" max="10000" value="1" class="form-control" style="max-width:100px" />
                             <span class="input-group-text">x</span>
                             <input class="form-control" list="datalist-archonCrystalUpgrades" />
                             <button class="btn btn-primary" type="submit">Add</button>