diff --git a/packages/remix-server-runtime/server.ts b/packages/remix-server-runtime/server.ts
index 227f5bd0627..de63313644f 100644
--- a/packages/remix-server-runtime/server.ts
+++ b/packages/remix-server-runtime/server.ts
@@ -51,7 +51,10 @@ export const createRequestHandler: CreateRequestHandlerFunction = (
     build.entry.module.handleError ||
     ((error, { request }) => {
       if (serverMode !== ServerMode.Test && !request.signal.aborted) {
-        console.error(isRouteErrorResponse(error) ? error.error : error);
+        console.error(
+          // @ts-expect-error This is "private" from users but intended for internal use
+          isRouteErrorResponse(error) && error.error ? error.error : error
+        );
       }
     });
 
@@ -225,6 +228,7 @@ async function handleDocumentRequestRR(
   // Sanitize errors outside of development environments
   if (context.errors) {
     Object.values(context.errors).forEach((err) => {
+      // @ts-expect-error This is "private" from users but intended for internal use
       if (!isRouteErrorResponse(err) || err.error) {
         handleError(err);
       }
@@ -353,6 +357,7 @@ function errorResponseToJson(
 ): Response {
   return routerJson(
     serializeError(
+      // @ts-expect-error This is "private" from users but intended for internal use
       errorResponse.error || new Error("Unexpected Server Error"),
       serverMode
     ),