diff --git a/gradle.properties b/gradle.properties
index 50cbf59..2d2e5dc 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -1,6 +1,6 @@
 ## Core
 
-VERSION = 0.4.2.3
+VERSION = 0.4.2.4
 
 # dependencies
 
diff --git a/src/main/java/cc/sukazyo/cono/morny/GradleProjectConfigures.java b/src/main/java/cc/sukazyo/cono/morny/GradleProjectConfigures.java
index 8a50a22..3a8381d 100644
--- a/src/main/java/cc/sukazyo/cono/morny/GradleProjectConfigures.java
+++ b/src/main/java/cc/sukazyo/cono/morny/GradleProjectConfigures.java
@@ -4,6 +4,6 @@ package cc.sukazyo.cono.morny;
  * the final field that will be updated by gradle automatically.
  */
 public class GradleProjectConfigures {
-	public static final String VERSION = "0.4.2.3";
-	public static final long COMPILE_TIMESTAMP = 1639543312227L;
+	public static final String VERSION = "0.4.2.4";
+	public static final long COMPILE_TIMESTAMP = 1639736122490L;
 }
diff --git a/src/main/java/cc/sukazyo/cono/morny/bot/event/on_commands/GetUsernameAndId.java b/src/main/java/cc/sukazyo/cono/morny/bot/event/on_commands/GetUsernameAndId.java
index b54bb9d..18e91a0 100644
--- a/src/main/java/cc/sukazyo/cono/morny/bot/event/on_commands/GetUsernameAndId.java
+++ b/src/main/java/cc/sukazyo/cono/morny/bot/event/on_commands/GetUsernameAndId.java
@@ -19,7 +19,7 @@ public class GetUsernameAndId {
 				"[Unavailable] Too much arguments."
 		).replyToMessageId(event.message().messageId())); return; }
 		
-		long userId = 0;
+		long userId = event.message().from().id();
 		
 		if ( event.message().replyToMessage()!= null) {
 			userId = event.message().replyToMessage().from().id();
@@ -36,14 +36,6 @@ public class GetUsernameAndId {
 			}
 		}
 		
-		if (userId == 0) {
-			MornyCoeur.getAccount().execute(new SendMessage(
-					event.message().chat().id(),
-					"[Unavailable] no userid given."
-			).replyToMessageId(event.message().messageId()));
-			return;
-		}
-		
 		final GetChatMemberResponse response = MornyCoeur.getAccount().execute(
 				new GetChatMember(event.message().chat().id(), userId)
 		);