diff --git a/src/controllers/api/guildTechController.ts b/src/controllers/api/guildTechController.ts
index 5de2a00a..257434fb 100644
--- a/src/controllers/api/guildTechController.ts
+++ b/src/controllers/api/guildTechController.ts
@@ -305,10 +305,10 @@ export const guildTechController: RequestHandler = async (req, res) => {
         guild.ActiveDojoColorResearch = data.RecipeType;
         await guild.save();
         res.end();
-    } else if (data.Action == "Rush") {
+    } else if (data.Action == "Rush" && data.CategoryItemId) {
         const inventoryChanges: IInventoryChanges = {
             ...updateCurrency(inventory, 20, true),
-            ...claimSalvagedComponent(inventory, data.CategoryItemId!)
+            ...claimSalvagedComponent(inventory, data.CategoryItemId)
         };
         await inventory.save();
         res.json({
@@ -316,7 +316,7 @@ export const guildTechController: RequestHandler = async (req, res) => {
         });
     } else {
         logger.debug(`data provided to ${req.path}: ${String(req.body)}`);
-        throw new Error(`unknown guildTech action: ${data.Action}`);
+        throw new Error(`unhandled guildTech request`);
     }
 };