diff --git a/src/telegram-puppet.js b/src/telegram-puppet.js
index 8ab6b171..78462c6e 100644
--- a/src/telegram-puppet.js
+++ b/src/telegram-puppet.js
@@ -181,7 +181,7 @@ class TelegramPuppet {
 
 	getDisplayName() {
 		if (this.data.firstName || this.data.lastName) {
-			return [this.firstName, this.lastName].filter(s => !!s)
+			return [this.data.firstName, this.data.lastName].filter(s => !!s)
 				.join(" ")
 		} else if (this.data.username) {
 			return this.data.username