diff --git a/components/app.js b/components/app.js
index cc77b70..1a82a14 100644
--- a/components/app.js
+++ b/components/app.js
@@ -404,6 +404,9 @@ export default class App extends Component {
 
 			this.setBufferState(channel, { topic });
 			break;
+		case irc.RPL_TOPICWHOTIME:
+			// Ignore
+			break;
 		case irc.RPL_NAMREPLY:
 			var channel = msg.params[2];
 			var membersList = msg.params[3].split(" ");
diff --git a/lib/irc.js b/lib/irc.js
index 68e883c..361b4ad 100644
--- a/lib/irc.js
+++ b/lib/irc.js
@@ -6,6 +6,7 @@ export const RPL_MYINFO = "004";
 export const RPL_ENDOFWHO = "315";
 export const RPL_NOTOPIC = "331";
 export const RPL_TOPIC = "332";
+export const RPL_TOPICWHOTIME = "333";
 export const RPL_WHOREPLY = "352";
 export const RPL_NAMREPLY = "353";
 export const RPL_ENDOFNAMES = "366";