diff --git a/src/json-crdt/codec/structural/binary/Decoder.ts b/src/json-crdt/codec/structural/binary/Decoder.ts
index 15c213bb42..11b27b33ff 100644
--- a/src/json-crdt/codec/structural/binary/Decoder.ts
+++ b/src/json-crdt/codec/structural/binary/Decoder.ts
@@ -78,22 +78,21 @@ export class Decoder extends CborDecoderBase<CrdtReader> {
     const octet = reader.u8();
     const major = octet >> 5;
     const minor = octet & 0b11111;
-    const length = minor < 0b11111 ? minor : reader.vu57();
     switch (major) {
       case CRDT_MAJOR.CON:
-        return this.cCon(id, length);
+        return this.cCon(id, minor);
       case CRDT_MAJOR.VAL:
         return this.cVal(id);
       case CRDT_MAJOR.OBJ:
-        return this.cObj(id, length);
+        return this.cObj(id, minor < 0b11111 ? minor : reader.vu57());
       case CRDT_MAJOR.VEC:
-        return this.cVec(id, length);
+        return this.cVec(id, minor < 0b11111 ? minor : reader.vu57());
       case CRDT_MAJOR.STR:
-        return this.cStr(id, length);
+        return this.cStr(id, minor < 0b11111 ? minor : reader.vu57());
       case CRDT_MAJOR.BIN:
-        return this.cBin(id, length);
+        return this.cBin(id, minor < 0b11111 ? minor : reader.vu57());
       case CRDT_MAJOR.ARR:
-        return this.cArr(id, length);
+        return this.cArr(id, minor < 0b11111 ? minor : reader.vu57());
     }
     throw new Error('UNKNOWN_NODE');
   }
diff --git a/src/json-crdt/codec/structural/binary/Encoder.ts b/src/json-crdt/codec/structural/binary/Encoder.ts
index 13aaf3209d..8e28e23865 100644
--- a/src/json-crdt/codec/structural/binary/Encoder.ts
+++ b/src/json-crdt/codec/structural/binary/Encoder.ts
@@ -104,20 +104,17 @@ export class Encoder extends CborEncoder<CrdtWriter> {
     const val = node.val;
     this.ts(node.id);
     if (val instanceof Timestamp) {
-      // this.writeTL(CRDT_MAJOR_OVERLAY.CON, 1);
-      this.writer.u8(1);
+      this.writer.u8(1); // this.writeTL(CRDT_MAJOR_OVERLAY.CON, 1);
       this.ts(val as Timestamp);
     } else {
-      // this.writeTL(CRDT_MAJOR_OVERLAY.CON, 0);
-      this.writer.u8(0);
+      this.writer.u8(0); // this.writeTL(CRDT_MAJOR_OVERLAY.CON, 0);
       this.writeAny(val);
     }
   }
 
   protected cVal(node: nodes.ValNode): void {
     this.ts(node.id);
-    // this.writeTL(CRDT_MAJOR_OVERLAY.VAL, 0);
-    this.writer.u8(0b00100000);
+    this.writer.u8(0b00100000); // this.writeTL(CRDT_MAJOR_OVERLAY.VAL, 0);
     this.cNode(node.node());
   }
 
diff --git a/src/json-crdt/codec/structural/binary/README.md b/src/json-crdt/codec/structural/binary/README.md
deleted file mode 100644
index db876dee46..0000000000
--- a/src/json-crdt/codec/structural/binary/README.md
+++ /dev/null
@@ -1,9 +0,0 @@
-| JSON CRDT node type | CBOR encoding |
-| ------------------- | ------------- |
-| `con`               | Major type 0  |
-| `val`               | Major type 1  |
-| `vec`               | Major type 2  |
-| `obj`               | Major type 3  |
-| `str`               | Major type 4  |
-| `bin`               | Major type 5  |
-| `arr`               | Major type 6  |