diff --git a/rvgo/fast/memory.go b/rvgo/fast/memory.go
index e239fcdd..03e36a4e 100644
--- a/rvgo/fast/memory.go
+++ b/rvgo/fast/memory.go
@@ -140,7 +140,7 @@ func (m *Memory) GetUnaligned(addr uint64, dest []byte) {
 	p, ok := m.pageLookup(pageIndex)
 	var d int
 	if !ok {
-		l := pageSize - pageAddr
+		l := PageSize - pageAddr
 		if l > 32 {
 			l = 32
 		}
@@ -160,7 +160,7 @@ func (m *Memory) GetUnaligned(addr uint64, dest []byte) {
 	pageAddr = addr & PageAddrMask
 	p, ok = m.pageLookup(pageIndex)
 	if !ok {
-		l := pageSize - pageAddr
+		l := PageSize - pageAddr
 		if l > 32 {
 			l = 32
 		}
diff --git a/rvgo/fast/state.go b/rvgo/fast/state.go
index 3f970e3f..75b4460a 100644
--- a/rvgo/fast/state.go
+++ b/rvgo/fast/state.go
@@ -13,16 +13,6 @@ import (
 	"github.com/ethereum/go-ethereum/crypto"
 )
 
-// page size must be at least 32 bytes (one merkle node)
-// memory merkleization will look the same regardless of page size past 32.
-const (
-	pageAddrSize = 10
-	pageKeySize  = 64 - pageAddrSize
-	pageSize     = 1 << pageAddrSize
-	pageAddrMask = pageSize - 1
-	maxPageCount = 1 << pageKeySize
-)
-
 type VMState struct {
 	Memory *Memory `json:"memory"`