diff --git a/protocols/osi1-2/eth-frame.yml b/protocols/osi1-2/eth-frame.yml
index c69c3f0..bc1f03a 100644
--- a/protocols/osi1-2/eth-frame.yml
+++ b/protocols/osi1-2/eth-frame.yml
@@ -38,7 +38,6 @@ protocol: &ethframe
       length: 2
     -
       field: data
-      length: 0
       data: true
     -
       field: FCS (32-bit CRC)
diff --git a/protocols/osi4/tcp.yml b/protocols/osi4/tcp.yml
index ddff1ad..2446cbf 100644
--- a/protocols/osi4/tcp.yml
+++ b/protocols/osi4/tcp.yml
@@ -59,6 +59,5 @@ protocol: &tcp
       repeatable: true
     -
       field: data
-      length: 0
       data: true
   osilayer: 4