diff --git a/src/routes/apiRoutes.js b/src/routes/apiRoutes.js
index 6979b53..9ff1513 100644
--- a/src/routes/apiRoutes.js
+++ b/src/routes/apiRoutes.js
@@ -15,7 +15,7 @@ class ApiRoutesProvider {
         signUpChallenge =
           await this.services.invitesService.createSignUpChallenge(inviteUuid);
       } catch (error) {
-        if (error instanceof this.services.NotFoundError) {
+        if (error instanceof this.errors.NotFoundError) {
           return res.status(404).json({
             success: false,
             message: 'Could not find invite with that id.',