diff --git a/bin/tipbot.js b/bin/tipbot.js
index bdeb41c..55f0b37 100644
--- a/bin/tipbot.js
+++ b/bin/tipbot.js
@@ -271,6 +271,7 @@ client.addListener('message', function(from, channel, message) {
               client.say(channel, settings.messages.rain.expand({name: from, amount: parseFloat((amount / max).toFixed(8)), list: (whole_channel && !settings.commands.rain.rain_on_last_active) ? 'the whole channel' : names.join(', ')}));
             });
           } else {
+            locks[from.toLowerCase()] = null;
             winston.info('%s tried to tip %s %d, but has only %d', from, to, amount, balance);
             client.say(channel, settings.messages.no_funds.expand({name: from, balance: balance, short: amount - balance, amount: amount}));
           }