diff --git a/encode.go b/encode.go
index 6297a1a..f139c5c 100644
--- a/encode.go
+++ b/encode.go
@@ -165,8 +165,7 @@ func (e *Encoder) encode(v interface{}) error {
 		ctx := codeSet.ctx.Get().(*encodeRuntimeContext)
 		p := uintptr(header.ptr)
 		ctx.init(p)
-		seenPtr := map[uintptr]struct{}{}
-		err := e.run(ctx, 0, seenPtr, code)
+		err := e.run(ctx, code)
 		codeSet.ctx.Put(ctx)
 		return err
 	}
@@ -214,8 +213,7 @@ func (e *Encoder) encode(v interface{}) error {
 		c = code
 	}
 
-	seenPtr := map[uintptr]struct{}{}
-	if err := e.run(ctx, 0, seenPtr, c); err != nil {
+	if err := e.run(ctx, c); err != nil {
 		codeSet.ctx.Put(ctx)
 		return err
 	}
diff --git a/encode_vm.go b/encode_vm.go
index 813ef8b..ca052fc 100644
--- a/encode_vm.go
+++ b/encode_vm.go
@@ -21,9 +21,12 @@ func store(base uintptr, idx uintptr, p uintptr) {
 	*(*uintptr)(unsafe.Pointer(base + idx)) = p
 }
 
-func (e *Encoder) run(ctx *encodeRuntimeContext, recursiveLevel int, seenPtr map[uintptr]struct{}, code *opcode) error {
+func (e *Encoder) run(ctx *encodeRuntimeContext, code *opcode) error {
+	recursiveLevel := 0
+	seenPtr := map[uintptr]struct{}{}
 	ptrOffset := uintptr(0)
 	ctxptr := ctx.ptr()
+
 	for {
 		switch code.op {
 		case opPtr: