diff --git a/src/lib.rs b/src/lib.rs
index b43f3a6..91a8d68 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -38,35 +38,35 @@ impl PSOPacketData for u8 {
     }
 }
 
-impl PSOPacketData for u32 {
-    fn from_bytes<R: Read>(cursor: &mut R) -> Result<u32, PacketParseError>  {
-        let mut bytes = [0u8; 4];
+impl PSOPacketData for u16 {
+    fn from_bytes<R: Read>(cursor: &mut R) -> Result<u16, PacketParseError>  {
+        let mut bytes = [0u8; 2];
         let len = cursor.read(&mut bytes).map_err(|_| PacketParseError::ReadError)?;
-        if len == 4 {
-            Ok(u32::from_le_bytes(bytes))
+        if len == 2 {
+            Ok(u16::from_le_bytes(bytes))
         }
         else {
             Err(PacketParseError::NotEnoughBytes)
         }
     }
     fn as_bytes(&self) -> Vec<u8> {
-        u32::to_le_bytes(*self).to_vec()
+        u16::to_le_bytes(*self).to_vec()
     }
 }
 
-impl PSOPacketData for u16 {
-    fn from_bytes<R: Read>(cursor: &mut R) -> Result<u16, PacketParseError>  {
-        let mut bytes = [0u8; 2];
+impl PSOPacketData for u32 {
+    fn from_bytes<R: Read>(cursor: &mut R) -> Result<u32, PacketParseError>  {
+        let mut bytes = [0u8; 4];
         let len = cursor.read(&mut bytes).map_err(|_| PacketParseError::ReadError)?;
-        if len == 2 {
-            Ok(u16::from_le_bytes(bytes))
+        if len == 4 {
+            Ok(u32::from_le_bytes(bytes))
         }
         else {
             Err(PacketParseError::NotEnoughBytes)
         }
     }
     fn as_bytes(&self) -> Vec<u8> {
-        u16::to_le_bytes(*self).to_vec()
+        u32::to_le_bytes(*self).to_vec()
     }
 }