diff --git a/src/login/character.rs b/src/login/character.rs
index abcaef3..64caa0c 100644
--- a/src/login/character.rs
+++ b/src/login/character.rs
@@ -31,7 +31,8 @@ pub enum CharacterError {
 pub enum RecvCharacterPacket {
     Login(Login),
     RequestSettings(RequestSettings),
-    CharSelect(CharSelect)
+    CharSelect(CharSelect),
+    Checksum(Checksum),
 }
 
 impl RecvServerPacket for RecvCharacterPacket {
@@ -40,6 +41,7 @@ impl RecvServerPacket for RecvCharacterPacket {
             0x93 => Ok(RecvCharacterPacket::Login(Login::from_bytes(data)?)),
             0xE0 => Ok(RecvCharacterPacket::RequestSettings(RequestSettings::from_bytes(data)?)),
             0xE3 => Ok(RecvCharacterPacket::CharSelect(CharSelect::from_bytes(data)?)),
+            0x1E8 => Ok(RecvCharacterPacket::Checksum(Checksum::from_bytes(data)?)),
             _ => Err(PacketParseError::WrongPacketForServerType)
         }
     }
@@ -52,6 +54,7 @@ pub enum SendCharacterPacket {
     LoginWelcome(LoginWelcome),
     SendKeyAndTeamSettings(SendKeyAndTeamSettings),
     CharAck(CharAck),
+    ChecksumAck(ChecksumAck),
 }
 
 impl SendServerPacket for SendCharacterPacket {
@@ -61,6 +64,7 @@ impl SendServerPacket for SendCharacterPacket {
             SendCharacterPacket::LoginWelcome(pkt) => pkt.as_bytes(),
             SendCharacterPacket::SendKeyAndTeamSettings(pkt) => pkt.as_bytes(),
             SendCharacterPacket::CharAck(pkt) => pkt.as_bytes(),
+            SendCharacterPacket::ChecksumAck(pkt) => pkt.as_bytes(),
             //SendLoginPacket::RedirectClient(pkt) => pkt.as_bytes(),
         }
     }
@@ -115,6 +119,13 @@ impl<DA: DataAccess> CharacterServerState<DA> {
             code: 2,
         })]
     }
+
+    fn validate_checksum(&mut self) -> Vec<SendCharacterPacket> {
+        vec![SendCharacterPacket::ChecksumAck(ChecksumAck {
+            flag: 0,
+            ack: 1,
+        })]
+    }
 }
 
 impl<DA: DataAccess> ServerState for CharacterServerState<DA> {
@@ -147,6 +158,9 @@ impl<DA: DataAccess> ServerState for CharacterServerState<DA> {
             RecvCharacterPacket::CharSelect(sel) => {
                 Box::new(self.char_select(sel).into_iter())
             }
+            RecvCharacterPacket::Checksum(checksum) => {
+                Box::new(self.validate_checksum().into_iter())
+            }
         }
     }
 }
@@ -200,4 +214,17 @@ mod test {
         assert!(bytes[2] == 0xE2);
         assert!(bytes.len() == 0xAFC);
     }
-}
+
+    #[test]
+    fn test_user_checksum() {
+        struct TestData {}
+        impl DataAccess for TestData{}
+        let shared = SharedLoginState::new(TestData {});
+        let mut server = CharacterServerState::new(shared);
+        let send = server.handle(&RecvCharacterPacket::Checksum(Checksum {flag: 0})).collect::<Vec<_>>();
+        assert!(send.len() == 1);
+
+        let bytes = send[0].as_bytes();
+        assert!(bytes == [0xC, 0, 0xE8, 0x02, 0,0,0,0, 1,0,0,0]);
+    }
+}
\ No newline at end of file