diff --git a/test/test_discordbot.ts b/test/test_discordbot.ts
index 769c9eeb6eade5cf98651c140abe6b4883188572..f6208be1d18c3d8d32377f56c27a94458ddcde8f 100644
--- a/test/test_discordbot.ts
+++ b/test/test_discordbot.ts
@@ -453,7 +453,7 @@ describe("DiscordBot", () => {
             bot.lockChannel(chan);
             await bot.waitUnlock(chan);
             const diff = Date.now() - t;
-            expect(diff).to.be.greaterThan(SHORTDELAY);
+            expect(diff).to.be.greaterThan(SHORTDELAY - 1);
         });
     });
   // });