diff --git a/src/controllers/api/focusController.ts b/src/controllers/api/focusController.ts
index 9d205fd7..268b53ba 100644
--- a/src/controllers/api/focusController.ts
+++ b/src/controllers/api/focusController.ts
@@ -9,7 +9,7 @@ export const focusController: RequestHandler = async (req, res) => {
     const accountId = await getAccountIdForRequest(req);
     switch (req.query.op) {
         default:
-            logger.error("Unhandled focus op type: " + req.query.op);
+            logger.error("Unhandled focus op type: " + String(req.query.op));
             logger.debug(String(req.body));
             res.end();
             break;
diff --git a/src/controllers/api/gildWeaponController.ts b/src/controllers/api/gildWeaponController.ts
index 2855893f..319da457 100644
--- a/src/controllers/api/gildWeaponController.ts
+++ b/src/controllers/api/gildWeaponController.ts
@@ -29,17 +29,17 @@ export const gildWeaponController: RequestHandler = async (req, res) => {
     const data = getJSONfromString(String(req.body)) as IGildWeaponRequest;
     data.ItemId = String(req.query.ItemId);
     if (!modularWeaponCategory.includes(req.query.Category as WeaponTypeInternal | "Hoverboards")) {
-        throw new Error(`Unknown modular weapon Category: ${req.query.Category}`);
+        throw new Error(`Unknown modular weapon Category: ${String(req.query.Category)}`);
     }
     data.Category = req.query.Category as WeaponTypeInternal | "Hoverboards";
 
     const inventory = await getInventory(accountId);
     if (!inventory[data.Category]) {
-        throw new Error(`Category ${req.query.Category} not found in inventory`);
+        throw new Error(`Category ${String(req.query.Category)} not found in inventory`);
     }
     const weaponIndex = inventory[data.Category].findIndex(x => String(x._id) === data.ItemId);
     if (weaponIndex === -1) {
-        throw new Error(`Weapon with ${data.ItemId} not found in category ${req.query.Category}`);
+        throw new Error(`Weapon with ${data.ItemId} not found in category ${String(req.query.Category)}`);
     }
 
     const weapon = inventory[data.Category][weaponIndex];
diff --git a/src/controllers/api/infestedFoundryController.ts b/src/controllers/api/infestedFoundryController.ts
index f58fafc0..bc8e30a3 100644
--- a/src/controllers/api/infestedFoundryController.ts
+++ b/src/controllers/api/infestedFoundryController.ts
@@ -111,7 +111,7 @@ export const infestedFoundryController: RequestHandler = async (req, res) => {
             break;
 
         default:
-            throw new Error(`unhandled infestedFoundry mode: ${req.query.mode}`);
+            throw new Error(`unhandled infestedFoundry mode: ${String(req.query.mode)}`);
     }
 };