diff --git a/modules/karma/karma.js b/modules/karma/karma.js
index 4bcfc60..a6c168e 100644
--- a/modules/karma/karma.js
+++ b/modules/karma/karma.js
@@ -102,6 +102,8 @@ var karma = function(dbot) {
             match[1] = match[1].replace(/(\+|\-)/g,'');
             if(_.has(this.lastKarma, event.rUser.id) && this.lastKarma[event.rUser.id] + 5000 > Date.now()) {
                 return event.reply('Try again in a few seconds : - )');
+            } else if(event.rUser.currentNick.toLowerCase === match[1].toLowerCase() || event.rUser.primaryNick.toLowerCase() === match[1].toLowerCase()) {
+                return event.reply('Stop playing with yourself : - )');
             }
 
             this.internalAPI.getKarma(match[1], function(err, karma) {