diff --git a/net/src/protocol.rs b/net/src/protocol.rs
index 8808e23c..276a306f 100644
--- a/net/src/protocol.rs
+++ b/net/src/protocol.rs
@@ -440,7 +440,7 @@ impl<'a> Packet<'a> {
             payload
         };
 
-        if payload.len() > MAX_PAYLOAD + TOKEN_SIZE {
+        if payload.len() > MAX_PACKETSIZE - HEADER_SIZE {
             return Err(Compression);
         }
 
diff --git a/net/src/protocol7.rs b/net/src/protocol7.rs
index 4d4df327..7ebda6af 100644
--- a/net/src/protocol7.rs
+++ b/net/src/protocol7.rs
@@ -194,7 +194,7 @@ impl<'a> Packet<'a> {
             payload
         };
 
-        if payload.len() > MAX_PAYLOAD {
+        if payload.len() > MAX_PACKETSIZE - HEADER_SIZE {
             return Err(Compression);
         }