diff --git a/src/packet/login.rs b/src/packet/login.rs
index 7a506fd..0ea328d 100644
--- a/src/packet/login.rs
+++ b/src/packet/login.rs
@@ -386,9 +386,9 @@ impl std::fmt::Debug for GuildcardDataChunk {
     fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
         write!(f, "packet GuildcardDataChunk {{\n").unwrap();
         write!(f, "    flag: {:?}\n", 0).unwrap();
-        write!(f, "    _unknown: {:X?}\n", self._unknown).unwrap();
-        write!(f, "    chunk: {:X?}\n", self.chunk).unwrap();
-        write!(f, "    buffer: [0..{:X}]\n", self.len).unwrap();
+        write!(f, "    _unknown: {:#X?}\n", self._unknown).unwrap();
+        write!(f, "    chunk: {:#X?}\n", self.chunk).unwrap();
+        write!(f, "    buffer: [0..{:#X}]\n", self.len).unwrap();
         write!(f, "}}")
     }
 }