diff --git a/src/discordas.ts b/src/discordas.ts
index 5cd3cb667281a11a6d6e970a03960432b35fab87..fddee0b45b345162b862fc4364b82e883b2e64b1 100644
--- a/src/discordas.ts
+++ b/src/discordas.ts
@@ -134,6 +134,11 @@ async function run(port: number, fileConfig: DiscordBridgeConfig) {
                         err = wrapError(err, Unstable.InternalError);
                     }
 
+                    // Don't send bridge errors out for EventTooOldError.
+                    if (err instanceof Unstable.EventTooOldError) {
+                        err = wrapError(err, Error);
+                    }
+
                     request.reject(err);
                 } finally {
                     recordRequestOutcome(request);