diff --git a/src/bot.ts b/src/bot.ts
index 1ecd02f02b86ff26f5f0d30131c97b1f75571885..ab5abffae88099bacdb8612e3675823c964def2e 100644
--- a/src/bot.ts
+++ b/src/bot.ts
@@ -157,7 +157,7 @@ export class DiscordBot {
 
     public unlockChannel(channel: Discord.Channel) {
         const lock = this.channelLocks[channel.id];
-        if (lock && lock.i) {
+        if (lock && lock.i !== null) {
             clearTimeout(lock.i);
         }
         delete this.channelLocks[channel.id];